970 area code
The 970 area code is primarily associated with the state of Colorado in the United States. Encompassing cities such as Fort Collins, Grand Junction, Greeley, Loveland, and parts of the Rocky Mountains, it was introduced to alleviate the demand for telephone numbers in the region. Notable for its diverse geography, from the plains of Greeley to the mountains of Grand Junction, the 970 area code is a key identifier for various communities in the state, each contributing to Colorado's rich cultural and economic tapestry.
| State | colorado |
| Major City | Fort Collins |
| Timezone | Mountain Time zone |
What time zone is area code 970?
Area code 970 is located in the Mountain Time Zone. This time zone is observed in parts of the western United States, including the state of Colorado where the 970 area code is predominantly assigned. The Mountain Time Zone is seven hours behind Coordinated Universal Time (UTC-7:00) during standard time and six hours behind (UTC-6:00) during daylight saving time. This time zone encompasses various cities and regions in the Rocky Mountains and the western interior of the United States.
Note that the start and end dates of daylight saving time can change
History
The 970 area code was introduced in 1995 as a split from the 303 area code to address the escalating demand for telephone services in northern and western Colorado. Covering cities like Fort Collins and Grand Junction, this area code has played a pivotal role in connecting communities across the diverse landscapes of the state, contributing to its growth and development over the years.
Nearby Areacodes of 970
This table provides a quick overview of all area codes, their locations, and some historical context for each.
| Area Code | Location | History and Details |
|---|---|---|
| 303/720 | Denver, CO | The 303 area code, established in 1947, covers the entire state of Colorado. It primarily serves the Denver metropolitan area and its surroundings. In 1998, the 720 overlay was introduced to meet increasing demand while preserving existing numbers. |
| 307 | Wyoming | Include relevant history and details here. |
| 308 | Grand Island, NE | Include relevant history and details here. |
| 402/531 | Omaha, NE | Include relevant history and details here. |
| 435 | St. George, UT | Include relevant history and details here. |
| 505 | Albuquerque, NM | Include relevant history and details here. |
| 575 | Las Cruces, NM | Include relevant history and details here. |
| 580 | Lawton, OK | Include relevant history and details here. |
| 719 | Colorado Springs, CO | Include relevant history and details here. |
| 785 | Topeka, KS | Include relevant history and details here. |
| 928 | Yuma, AZ | Include relevant history and details here. |
| 970 | Fort Collins, CO | The 970 area code, established in 1995, emerged as a split from the 303 area code to accommodate the growing demand for telephone services in northern and western Colorado. Covering cities like Fort Collins and Grand Junction, this area code has played a pivotal role in connecting communities across the diverse landscapes of the state, contributing to its growth and development over the years. |
Counties in Area Code 970
Area code 970 covers a total of 31 counties in the state of kentucky. These counties include a diverse range of landscapes and communities, from the eastern plains to the western mountains.
| County | Total Population | % of 970 | % of County |
|---|---|---|---|
| Larimer, CO | 299,630 | 5% | 97% |
| Weld, CO | 252,825 | 6% | 81% |
| Mesa, CO | 146,723 | 6% | 100% |
| Garfield, CO | 56,389 | 5% | 100% |
| Eagle, CO | 52,197 | 3% | 100% |
| La Plata, CO | 51,334 | 3% | 100% |
| Montrose, CO | 41,276 | 4% | 100% |
| Delta, CO | 30,952 | 2% | 100% |
| Morgan, CO | 28,159 | 2% | 100% |
| Summit, CO | 27,994 | 1% | 100% |
| Montezuma, CO | 25,535 | 4% | 100% |
| Routt, CO | 23,509 | 4% | 100% |
| Logan, CO | 22,709 | 3% | 100% |
| Pitkin, CO | 17,148 | 2% | 100% |
| Gunnison, CO | 15,324 | 6% | 100% |
| Grand, CO | 14,843 | 3% | 100% |
| Moffat, CO | 13,795 | 9% | 100% |
| Archuleta, CO | 12,084 | 2% | 100% |
| Yuma, CO | 10,043 | 4% | 100% |
| San Miguel, CO | 7,359 | 2% | 100% |
| Rio Blanco, CO | 6,666 | 6% | 100% |
| Washington, CO | 4,814 | 4% | 97% |
| Phillips, CO | 4,442 | 1% | 100% |
| Ouray, CO | 4,436 | 1% | 100% |
| Sedgwick, CO | 2,379 | 1% | 100% |
| Dolores, CO | 2,064 | 2% | 100% |
| Jackson, CO | 1,394 | 3% | 100% |
| Kit Carson, CO | 8,270 | 1% | 16% |
| Hinsdale, CO | 843 | 2% | 100% |
| San Juan, CO | 699 | 1% | 100% |
| Clear Creek, CO | 9,088 | 0% | 7% |
Cities in Area Code 970
Here are the some of the major cities and towns in Michigan covered by area code 970 include Cheyenne, Casper, Laramie, Gillette, Rock Springs, Sheridan, Jackson, Cody, and Evanston, among others. There are many more smaller towns and communities within this area code as well.
| County | Total Population | % of 970 | % of County |
|---|---|---|---|
| Fort Collins, CO | 143,986 | 0% | 100% |
| Greeley, CO | 92,889 | 0% | 100% |
| Loveland, CO | 66,859 | 0% | 100% |
| Grand Junction, CO | 58,566 | 0% | 100% |
| Clifton, CO | 19,889 | 0% | 100% |
| Montrose, CO | 19,132 | 0% | 100% |
| Windsor, CO | 18,644 | 0% | 100% |
| Evans, CO | 18,537 | 0% | 100% |
| Durango, CO | 16,887 | 0% | 100% |
| Sterling, CO | 14,777 | 0% | 100% |
| Fruita, CO | 12,646 | 0% | 100% |
| Steamboat Springs, CO | 12,088 | 0% | 100% |
| Fort Morgan, CO | 11,315 | 0% | 100% |
| Edwards, CO | 10,266 | 0% | 100% |
| Johnstown, CO | 9,887 | 0% | 100% |
| Glenwood Springs, CO | 9,614 | 0% | 100% |
| Craig, CO | 9,464 | 0% | 100% |
| Rifle, CO | 9,172 | 0% | 100% |
| Delta, CO | 8,915 | 0% | 100% |
| Redlands, CO | 8,685 | 0% | 100% |
| Cortez, CO | 8,482 | 0% | 100% |
| Fruitvale, CO | 7,675 | 0% | 100% |
| Orchard Mesa, CO | 6,836 | 0% | 100% |
| Aspen, CO | 6,658 | 0% | 100% |
| Eagle, CO | 6,508 | 0% | 100% |
| Gypsum, CO | 6,477 | 0% | 100% |
| Avon, CO | 6,447 | 0% | 100% |
| Carbondale, CO | 6,427 | 0% | 100% |
| Wellington, CO | 6,289 | 0% | 100% |
| Estes Park, CO | 5,858 | 0% | 100% |
| Gunnison, CO | 5,854 | 0% | 100% |
| Milliken, CO | 5,610 | 0% | 100% |
| Brush, CO | 5,463 | 0% | 100% |
| Vail, CO | 5,305 | 0% | 100% |
| Berthoud, CO | 5,105 | 0% | 100% |
| Breckenridge, CO | 4,540 | 0% | 100% |
| New Castle, CO | 4,518 | 0% | 100% |
| Battlement Mesa, CO | 4,471 | 0% | 100% |
| Eaton, CO | 4,365 | 0% | 100% |
| Silverthorne, CO | 3,887 | 0% | 100% |
| Basalt, CO | 3,857 | 0% | 100% |
| El Jebel, CO | 3,801 | 0% | 100% |
| Yuma, CO | 3,524 | 0% | 100% |
| Severance, CO | 3,165 | 0% | 100% |
| Orchard City, CO | 3,119 | 0% | 100% |
| Mead, CO | 3,405 | 0% | 91% |
| Silt, CO | 2,930 | 0% | 100% |
| Snowmass Village, CO | 2,826 | 0% | 100% |
| Palisade, CO | 2,692 | 0% | 100% |
| Frisco, CO | 2,683 | 0% | 100% |
Largest telephone carriers in area code 970
This table provides a quick overview of nearby area codes, their locations, and some historical context for each.
| Carrier | Landline Market Share | Wireless Market Share |
|---|---|---|
| Qwest Corporation | 30% | - |
| 360networks (usa) | 7% | - |
| Level 3 | 6% | - |
| Centurylink | 4% | - |
| Grand Valley Internet | 2% | - |
| Icg Telecom Group | 1% | - |
| Peerless Network | 1% | - |
| Other | 16% | - |
| Verizon Wireless | - | 10% |
| Sprint | - | 7% |
| Cingular | - | 5% |
| T-mobile | - | 3% |
| Union Telephone Company | - | 3% |
| Cricket Comm | - | 1% |
| Ne Colorado Cellular | - | 1% |
| Other | - | 2% |
Prefixes in Area Code 970
Below is the list of some of Prefixes in area code 970
| Prefix | Usage | Primary City | Carrier | Introduction Date |
|---|---|---|---|---|
| (970) 200- | wireless | Grand Jct | Flat West Wireless | 10/17/2008 |
| (970) 201- | wireless | Grand Jct | Sprint | 08/20/2000 |
| (970) 202- | wireless | Berthoud | Contact Paging | 10/15/1996 |
| (970) 203- | landline | Loveland | Qwest Corp. | 01/10/1996 |
| (970) 204- | landline | Ft Collins | Qwest Corp. | 07/04/1995 |
| (970) 205- | landline | Aspen | Qwest Corp. | 01/16/2001 |
| (970) 206- | landline | Ft Collins | Qwest Corp. | 07/01/1996 |
| (970) 207- | landline | Ft Collins | Qwest Corp. | 01/11/1997 |
| (970) 208- | landline | Grand Jct | Teleport Comms America | 04/01/1997 |
| (970) 209- | wireless | Montrose | Cingular Wireless | 02/11/1995 |
| (970) 210- | wireless | Grand Jct | Verizon Wireless | 02/11/1995 |
| (970) 212- | landline | Ft Collins | Icg Telecom Group | 07/06/1997 |
| (970) 213- | wireless | Ft Collins | Sprint | 06/30/2001 |
| (970) 214- | wireless | Ft Collins | Cingular Wireless | 04/15/1996 |
| (970) 215- | wireless | Ft Collins | Cingular Wireless | 07/01/1996 |
| (970) 216- | wireless | Grand Jct | Verizon Wireless | 07/04/1995 |
| (970) 217- | wireless | Ft Collins | Verizon Wireless | 07/04/1995 |
| (970) 218- | wireless | Ft Collins | Verizon Wireless | 07/04/1995 |
| (970) 219- | wireless | Ft Collins | Verizon Wireless | 02/11/1995 |
| (970) 220- | wireless | Rangely | Uintah Basin Electronic Telecom | 06/30/2001 |
| (970) 221- | landline | Ft Collins | Qwest Corp. | 02/11/1995 |
| (970) 222- | wireless | Ft Collins | Verizon Wireless | 02/11/1995 |
| (970) 223- | landline | Ft Collins | Qwest Corp. | 02/11/1995 |
| (970) 224- | landline | Ft Collins | Qwest Corp. | 02/11/1995 |
| (970) 225- | landline | Ft Collins | Qwest Corp. | 02/11/1995 |
| (970) 226- | landline | Ft Collins | Qwest Corp. | 02/11/1995 |
| (970) 227- | wireless | Ft Collins | Cingular Wireless | 02/11/1995 |
| (970) 228- | landline | Willard | Willard Telco | 02/11/1995 |
| (970) 229- | landline | Ft Collins | Qwest Corp. | 02/11/1995 |
| (970) 230- | wireless | Glenwood Springs | Sprint | 02/27/1999 |
| (970) 231- | wireless | Ft Collins | Cingular Wireless | 07/01/1996 |
| (970) 232- | landline | Ft Collins | AT&T; Local | 06/13/2000 |
| (970) 233- | landline | Collbran | 360networks (usa) | 07/09/2007 |
| (970) 234- | wireless | Grand Jct | T-mobile USA | 01/14/2000 |
| (970) 235- | landline | Estes Park | Eschelon Telecom | 10/07/2009 |
| (970) 236- | landline | Aspen | Zippytech Incorporated | 07/06/2009 |
| (970) 237- | landline | Ft Collins | Qwest Corp. | 05/01/2007 |
| (970) 238- | landline | Hesperus | 360networks (usa) | 07/10/2007 |
| (970) 239- | landline | Ridgway | Level 3 Comms | 02/13/2001 |
| (970) 240- | landline | Montrose | Qwest Corp. | 02/11/1995 |
| (970) 241- | landline | Grand Jct | Qwest Corp. | 02/11/1995 |
| (970) 242- | landline | Grand Jct | Qwest Corp. | 04/01/1997 |
| (970) 243- | landline | Grand Jct | Qwest Corp. | 02/11/1995 |
| (970) 244- | landline | Grand Jct | Qwest Corp. | 02/11/1995 |
| (970) 245- | landline | Grand Jct | Qwest Corp. | 02/11/1995 |
| (970) 246- | landline | Otis | Centurytel DBA Centurylink | 02/11/1995 |
| (970) 247- | landline | Durango | Qwest Corp. | 02/11/1995 |
| (970) 248- | landline | Grand Jct | Qwest Corp. | 02/11/1995 |
| (970) 249- | landline | Montrose | Qwest Corp. | 02/11/1995 |
| (970) 250- | wireless | Grand Jct | Verizon Wireless | 02/11/1995 |
| (970) 251- | landline | Crested Butte | Qwest Corp. | 03/27/2005 |
| (970) 252- | landline | Montrose | Qwest Corp. | 07/06/1997 |
| (970) 253- | landline | Peetz | Qwest Corp. | 01/10/1996 |
| (970) 254- | landline | Grand Jct | Qwest Corp. | 01/14/2000 |
| (970) 255- | landline | Grand Jct | Qwest Corp. | 04/01/1997 |
| (970) 256- | landline | Grand Jct | Qwest Corp. | 02/11/1995 |
| (970) 257- | landline | Grand Jct | Qwest Corp. | 07/04/1995 |
| (970) 258- | wireless | Montrose | Sprint | 08/20/2000 |
| (970) 259- | landline | Durango | Qwest Corp. | 02/11/1995 |
| (970) 260- | wireless | Grand Jct | Cingular Wireless | 02/11/1995 |
| (970) 261- | wireless | Grand Jct | Cingular Wireless | 07/01/1996 |
| (970) 262- | landline | Dillon | Qwest Corp. | 02/11/1995 |
| (970) 263- | landline | Grand Jct | Qwest Corp. | 01/25/1998 |
| (970) 264- | landline | Pagosa Springs | Centurytel DBA Centurylink | 02/11/1995 |
| (970) 265- | landline | Fleming | Haxtun Telco | 02/11/1995 |
| (970) 266- | landline | Ft Collins | Qwest Corp. | 10/11/1997 |
| (970) 267- | landline | Ft Collins | Qwest Corp. | 08/20/2000 |
| (970) 268- | landline | Mesa | Centurytel DBA Centurylink | 02/11/1995 |
| (970) 269- | wireless | Maybell | Union TelephoneCo. | 02/11/1995 |
| (970) 270- | wireless | Grand Jct | Cingular Wireless | 01/25/1998 |
| (970) 272- | landline | Maybell | Centurytel DBA Centurylink | 02/11/1995 |
| (970) 273- | landline | Basalt | San Isabel Telecom | 05/18/2006 |
| (970) 274- | wireless | Glenwood Springs | Cingular Wireless | 03/03/2001 |
| (970) 275- | wireless | Montrose | Cingular Wireless | 03/03/2001 |
| (970) 276- | landline | Hayden | Qwest Corp. | 02/11/1995 |
| (970) 277- | landline | Aspen | San Isabel Telecom | 11/16/2004 |
| (970) 278- | landline | Loveland | Qwest Corp. | 02/27/1999 |
| (970) 279- | landline | Basalt | Level 3 Comms | 10/27/2004 |
| (970) 280- | wireless | Gypsum | San Isabel Telecom | 04/26/2001 |
| (970) 281- | wireless | Granby | Sprint | 06/13/2000 |
| (970) 282- | landline | Ft Collins | Qwest Corp. | 02/11/1995 |
| (970) 283- | landline | Mesa | Qwest Corp. | 02/11/1995 |
| (970) 284- | landline | La Salle | Qwest Corp. | 02/11/1995 |
| (970) 285- | landline | Parachute | Qwest Corp. | 02/11/1995 |
| (970) 286- | wireless | Ft Collins | Cingular Wireless | 06/13/2011 |
| (970) 288- | landline | Ft Collins | Qwest Corp. | 08/20/2000 |
| (970) 289- | landline | Brush | Peerless Network | 04/10/2013 |
| (970) 290- | wireless | Loveland | Verizon Wireless | 01/11/1997 |
| (970) 291- | wireless | Steamboat Springs | Sprint | 06/13/2000 |
| (970) 292- | landline | Loveland | Icg Telecom Group | 07/06/1997 |
| (970) 293- | landline | Red Feather Lakes | 360networks (usa) | 07/10/2007 |
| (970) 294- | wireless | Ft Collins | T-mobile USA | 03/20/2014 |
| (970) 295- | landline | Ft Collins | Icg Telecom Group | 02/27/1999 |
| (970) 296- | landline | Fruita | MCI Metro ATS | 12/03/2013 |
| (970) 297- | landline | Ft Collins | Icg Telecom Group | 02/27/1999 |
| (970) 298- | landline | Grand Jct | Qwest Corp. | 02/04/2005 |
| (970) 299- | landline | Cortez | Grand Valley Internet | 01/27/2005 |
| (970) 300- | landline | Aspen | Level 3 Comms | 04/24/2001 |
| (970) 301- | wireless | Greeley | Verizon Wireless | 02/11/1995 |
| (970) 302- | wireless | Greeley | Verizon Wireless | 07/04/1995 |
| (970) 304- | landline | Greeley | Qwest Corp. | 07/04/1995 |
| (970) 305- | wireless | Ft Collins | Verizon Wireless | 08/27/2012 |
| (970) 306- | landline | Vail | Level 3 Comms | 06/30/2001 |
| (970) 308- | wireless | Loveland | Leap Wireless Intl DBA Cricket Comm | 01/03/2002 |
| (970) 309- | wireless | Glenwood Springs | Verizon Wireless | 02/11/1995 |
| (970) 310- | wireless | Ft Collins | T-mobile USA | 05/10/1999 |
| (970) 312- | Flat West Wireless | 07/10/2014 | ||
| (970) 313- | landline | Greeley | Icg Telecom Group | 07/06/1997 |
| (970) 314- | landline | Grand Jct | Bresnan Broadband | 03/27/2005 |
| (970) 315- | landline | Aspen | Level 3 Comms | 06/30/2001 |
| (970) 316- | wireless | Ridgway | Verizon Wireless | 10/11/1997 |
| (970) 317- | wireless | Durango | Cingular Wireless | 10/11/2010 |
| (970) 318- | wireless | Ridgway | Verizon Wireless | 02/11/1995 |
| (970) 319- | wireless | Glenwood Springs | Verizon Wireless | 02/11/1995 |
| (970) 320- | wireless | Glenwood Springs | Uintah Basin Electronic Telecom | 04/23/2002 |
| (970) 321- | wireless | Craig | Uintah Basin Electronic Telecom | 02/21/2001 |
| (970) 322- | wireless | Grand Jct | Uintah Basin Electronic Telecom | 02/21/2001 |
| (970) 323- | landline | Olathe | Qwest Corp. | 02/11/1995 |
| (970) 324- | landline | Greeley | Teleport Comms America | 04/01/1997 |
| (970) 325- | landline | Ridgway | Qwest Corp. | 02/11/1995 |
| (970) 326- | wireless | Craig | Union TelephoneCo. | 02/11/1995 |
| (970) 327- | landline | Nucla | Centurytel DBA Centurylink | 02/11/1995 |
| (970) 328- | landline | Gypsum | Centurytel DBA Centurylink | 02/11/1995 |
| (970) 329- | landline | Craig | Level 3 Comms | 09/06/2002 |
| (970) 330- | landline | Greeley | Qwest Corp. | 02/11/1995 |
| (970) 331- | wireless | Vail | Sprint | 02/27/1999 |
| (970) 332- | landline | Wray | Centurytel DBA Centurylink | 02/11/1995 |
| (970) 333- | wireless | Dillon | Sprint | 02/27/1999 |
| (970) 334- | landline | Peetz | Peetz Cooperative Telco | 02/11/1995 |
| (970) 335- | wireless | Durango | Qwest Corp. | 07/04/1995 |
| (970) 336- | landline | Greeley | Qwest Corp. | 11/20/1998 |
| (970) 337- | landline | Gypsum | San Isabel Telecom | 03/27/2001 |
| (970) 338- | landline | Hotchkiss | Delta County Tele - Comm | 04/16/2013 |
| (970) 339- | landline | Greeley | Qwest Corp. | 02/11/1995 |
| (970) 340- | landline | Carbondale | Teleport Comms America | 11/23/2012 |
| (970) 341- | landline | Olathe | Fasttrack Comms | 12/26/2013 |
| (970) 342- | landline | Loveland | Eschelon Telecom | 05/22/2013 |
| (970) 343- | landline | Vail | AT&T; Local | 01/07/2002 |
| (970) 344- | landline | Berthoud | Level 3 Comms | 10/27/2004 |
| (970) 345- | landline | Akron | Centurytel DBA Centurylink | 02/11/1995 |
| (970) 346- | landline | Greeley | Qwest Corp. | 02/11/1995 |
| (970) 347- | landline | Greeley | Qwest Corp. | 11/20/1998 |
| (970) 348- | landline | Greeley | Qwest Corp. | 06/13/2000 |
| (970) 349- | landline | Crested Butte | Qwest Corp. | 02/11/1995 |
| (970) 350- | landline | Greeley | Qwest Corp. | 02/11/1995 |
| (970) 351- | landline | Greeley | Qwest Corp. | 02/11/1995 |
| (970) 352- | landline | Greeley | Qwest Corp. | 02/11/1995 |
| (970) 353- | landline | Greeley | Qwest Corp. | 02/11/1995 |
| (970) 354- | landline | Idalia | Plains Cooperative Telephone Association | 02/11/1995 |
| (970) 355- | wireless | Glenwood Springs | T-mobile USA | 06/11/2002 |
| (970) 356- | landline | Greeley | Qwest Corp. | 02/11/1995 |
| (970) 357- | landline | Cope | Plains Cooperative Telephone Association | 02/11/1995 |
| (970) 358- | landline | Joes | Plains Cooperative Telephone Association | 02/11/1995 |
| (970) 359- | landline | Eckley | Plains Cooperative Telephone Association | 02/11/1995 |
| (970) 360- | landline | Yuma | 360networks (usa) | 07/10/2007 |
| (970) 361- | landline | Grand Jct | AT&T; Local | 08/27/2003 |
| (970) 362- | landline | Kirk | Plains Cooperative Telephone Association | 02/11/1995 |
| (970) 363- | landline | Granby | Level 3 Comms | 02/06/2002 |
| (970) 364- | landline | Granby | Level 3 Comms | 02/06/2002 |
| (970) 365- | landline | Maybell | Union Telco | 02/11/1995 |
| (970) 366- | landline | Glenwood Springs | Level 3 Comms | 08/20/2002 |
| (970) 367- | landline | Steamboat Springs | Level 3 Comms | 08/20/2002 |
| (970) 368- | landline | Dillon | Level 3 Comms | 08/20/2002 |
| (970) 369- | landline | Ridgway | Qwest Corp. | 05/10/1999 |
| (970) 370- | wireless | Fort Morgan | Verizon Wireless | 07/06/1997 |
| (970) 371- | wireless | Greeley | Cingular Wireless | 05/10/1999 |
| (970) 372- | landline | Ft Collins | Level 3 Comms | 05/10/1999 |
| (970) 373- | landline | Greeley | Level 3 Comms | 05/10/1999 |
| (970) 374- | landline | Dinosaur | Centurytel DBA Centurylink | 02/11/1995 |
| (970) 375- | landline | Durango | Qwest Corp. | 10/13/1999 |
| (970) 376- | wireless | Vail | Cingular Wireless | 02/11/1995 |
| (970) 377- | landline | Ft Collins | Qwest Corp. | 07/22/1999 |
| (970) 378- | landline | Greeley | Qwest Corp. | 01/14/2000 |
| (970) 379- | wireless | Glenwood Springs | Verizon Wireless | 02/11/1995 |
| (970) 380- | wireless | Fort Morgan | Verizon Wireless | 02/11/1995 |
| (970) 381- | wireless | Greeley | Verizon Wireless | 02/11/1995 |
| (970) 382- | landline | Durango | Qwest Corp. | 02/11/1995 |
| (970) 383- | landline | Anton | Plains Cooperative Telephone Association | 02/11/1995 |
| (970) 384- | landline | Glenwood Springs | Qwest Corp. | 01/14/2000 |
| (970) 385- | landline | Durango | Qwest Corp. | 02/11/1995 |
| (970) 386- | landline | Woodrow | Eastern Slope Rural Telephone Association | 02/11/1995 |
| (970) 387- | landline | Lake City | Qwest Corp. | 02/11/1995 |
| (970) 388- | wireless | Windsor | Leap Wireless Intl DBA Cricket Comm | 06/14/2001 |
| (970) 389- | wireless | Dillon | Cingular Wireless | 02/11/1995 |
| (970) 390- | wireless | Vail | Cingular Wireless | 02/11/1995 |
| (970) 391- | wireless | Ft Collins | Sprint | 05/10/1999 |
| (970) 392- | landline | Greeley | Qwest Corp. | 07/01/1996 |
| (970) 393- | wireless | Vail | T-mobile USA | 04/16/2001 |
| (970) 394- | wireless | Dolores | Cingular Wireless | 08/06/2003 |
| (970) 395- | landline | Greeley | Qwest Corp. | 02/11/1995 |
| (970) 396- | wireless | Greeley | Cingular Wireless | 02/11/1995 |
| (970) 397- | wireless | Greeley | Verizon Wireless | 10/11/1997 |
| (970) 398- | wireless | Pagosa Springs | Cingular Wireless | 08/21/2003 |
| (970) 399- | landline | Delta | Fasttrack Comms | 03/27/2005 |
| (970) 401- | wireless | Vail | Verizon Wireless | 02/11/1995 |
| (970) 402- | wireless | Ft Collins | T-mobile USA | 03/03/2001 |
| (970) 403- | landline | Durango | Zippytech Incorporated | 10/20/2005 |
| (970) 404- | wireless | Glenwood Springs | T-mobile USA | 04/24/2001 |
| (970) 405- | wireless | Greeley | T-mobile USA | 04/24/2001 |
| (970) 406- | wireless | Dillon | Verizon Wireless | 04/15/1996 |
| (970) 407- | landline | Ft Collins | Qwest Corp. | 01/10/1996 |
| (970) 408- | Teleport Comms America | 07/15/2014 | ||
| (970) 409- | wireless | Dillon | Verizon Wireless | 02/11/1995 |
| (970) 412- | wireless | Ft Collins | T-mobile USA | 10/31/2000 |
| (970) 414- | landline | Parachute | 360networks (usa) | 11/08/2006 |
| (970) 415- | wireless | Greeley | Verizon Wireless | 03/13/2013 |
| (970) 416- | landline | Ft Collins | Qwest Corp. | 02/11/1995 |
| (970) 417- | wireless | Montrose | Sprint | 03/25/2002 |
| (970) 418- | wireless | Dillon | Sprint | 02/11/1995 |
| (970) 419- | landline | Ft Collins | Qwest Corp. | 10/11/1997 |
| (970) 420- | wireless | Ft Collins | Verizon Wireless | 07/22/1999 |
| (970) 421- | wireless | Steamboat Springs | Uintah Basin Electronic Telecom | 07/16/2002 |
| (970) 422- | landline | Durango | Level 3 Comms | 04/08/2002 |
| (970) 423- | landline | Breckenridge | 360networks (usa) | 09/07/2006 |
| (970) 424- | landline | Grand Jct | Bresnan Broadband | 01/23/2007 |
| (970) 425- | landline | Carbondale | Level 3 Comms | 04/08/2002 |
| (970) 426- | wireless | Durango | Sprint | 03/03/2001 |
| (970) 427- | landline | Fort Morgan | AT&T; Local | 05/09/2002 |
| (970) 428- | wireless | Montrose | Nucla-naturita TelephoneCo. | 01/18/2006 |
| (970) 429- | landline | Aspen | Qwest Corp. | 01/14/2000 |
| (970) 430- | wireless | Ft Collins | Sprint | 06/28/2001 |
| (970) 431- | landline | Gypsum | 360networks (usa) | 07/10/2007 |
| (970) 432- | landline | Gypsum | 360networks (usa) | 07/10/2007 |
| (970) 433- | wireless | Grand Jct | T-mobile USA | 12/18/2002 |
| (970) 434- | landline | Grand Jct | Qwest Corp. | 02/11/1995 |
| (970) 435- | landline | Red Feather Lakes | Qwest Corp. | 06/30/2001 |
| (970) 436- | landline | Lake City | 360networks (usa) | 07/10/2007 |
| (970) 437- | landline | New Raymer | Wiggins Telephone Association | 02/11/1995 |
| (970) 438- | landline | Palisade | Bresnan Broadband | 09/13/2007 |
| (970) 439- | landline | Steamboat Springs | AT&T; Local | 11/21/2005 |
| (970) 440- | landline | Rifle | 360networks (usa) | 03/27/2005 |
| (970) 441- | wireless | Fort Morgan | Verizon Wireless | 01/14/2000 |
| (970) 442- | landline | Ignacio | 360networks (usa) | 07/10/2007 |
| (970) 443- | wireless | Ft Collins | Cingular Wireless | 09/26/2001 |
| (970) 444- | landline | Bayfield | Fasttrack Comms | 03/27/2005 |
| (970) 445- | wireless | Vail | Verizon Wireless | 04/15/1996 |
| (970) 446- | landline | Edwards | 360networks (usa) | 07/10/2007 |
| (970) 447- | wireless | Granby | Sprint | 07/31/2002 |
| (970) 448- | landline | Amherst | Great Plains Comms | 01/10/1996 |
| (970) 449- | landline | Ft Collins | Pac - West Telecomm | 12/06/2005 |
| (970) 450- | landline | Rangely | Grand Valley Internet | 01/31/2005 |
| (970) 453- | landline | Breckenridge | Qwest Corp. | 02/11/1995 |
| (970) 454- | landline | Eaton | Qwest Corp. | 02/11/1995 |
| (970) 455- | landline | Dillon | Level 3 Comms | 05/02/2002 |
| (970) 456- | landline | Glenwood Springs | Level 3 Comms | 05/02/2002 |
| (970) 457- | landline | Steamboat Springs | Level 3 Comms | 05/02/2002 |
| (970) 458- | landline | Sterling | Level 3 Comms | 05/02/2002 |
| (970) 459- | landline | Durango | Level 3 Comms | 05/02/2002 |
| (970) 460- | landline | Windsor | Comcast Phone | 02/09/2006 |
| (970) 461- | landline | Loveland | Qwest Corp. | 02/27/1999 |
| (970) 462- | landline | Grand Jct | Zippytech Incorporated | 05/06/2008 |
| (970) 463- | landline | Ovid | Qwest Corp. | 02/11/1995 |
| (970) 464- | landline | Palisade | Qwest Corp. | 02/11/1995 |
| (970) 465- | landline | Mc Coy | 360networks (usa) | 07/09/2007 |
| (970) 466- | wireless | Sterling | N.e. Colorado Cellular | 05/11/2001 |
| (970) 467- | wireless | Fort Morgan | N.e. Colorado Cellular | 05/11/2001 |
| (970) 468- | landline | Dillon | Qwest Corp. | 02/11/1995 |
| (970) 469- | landline | Otis | 360networks (usa) | 07/10/2007 |
| (970) 470- | wireless | Vail | Sprint | 02/27/1999 |
| (970) 471- | wireless | Vail | Verizon Wireless | 02/11/1995 |
| (970) 472- | landline | Ft Collins | Qwest Corp. | 01/11/1997 |
| (970) 474- | landline | Julesburg | Qwest Corp. | 02/11/1995 |
| (970) 475- | landline | Greeley | Mcleodusa Telecom Services | 08/28/2002 |
| (970) 476- | landline | Vail | Qwest Corp. | 02/11/1995 |
| (970) 477- | landline | Vail | Qwest Corp. | 11/20/1998 |
| (970) 478- | landline | Redvale | 360networks (usa) | 07/09/2007 |
| (970) 479- | landline | Vail | Qwest Corp. | 02/11/1995 |
| (970) 480- | landline | Estes Park | Bandwidth.com | 03/27/2005 |
| (970) 481- | wireless | Ft Collins | Cingular Wireless | 02/11/1995 |
| (970) 482- | landline | Ft Collins | Qwest Corp. | 02/11/1995 |
| (970) 483- | landline | Wiggins | Wiggins Telephone Association | 02/11/1995 |
| (970) 484- | landline | Ft Collins | Qwest Corp. | 02/11/1995 |
| (970) 485- | wireless | Dillon | Verizon Wireless | 02/11/1995 |
| (970) 486- | wireless | Dillon | Sprint | 08/14/1998 |
| (970) 487- | landline | Collbran | Centurytel DBA Centurylink | 02/11/1995 |
| (970) 488- | landline | Ft Collins | Qwest Corp. | 05/23/2005 |
| (970) 489- | landline | Carr | 360networks (usa) | 08/01/2007 |
| (970) 490- | landline | Ft Collins | Qwest Corp. | 02/11/1995 |
| (970) 491- | landline | Ft Collins | Qwest Corp. | 02/11/1995 |
| (970) 492- | landline | Ft Collins | Qwest Corp. | 08/28/2002 |
| (970) 493- | landline | Ft Collins | Qwest Corp. | 02/11/1995 |
| (970) 494- | landline | Ft Collins | Qwest Corp. | 06/13/2000 |
| (970) 495- | landline | Ft Collins | Qwest Corp. | 02/11/1995 |
| (970) 496- | landline | Dillon | Qwest Corp. | 04/15/1996 |
| (970) 497- | landline | Montrose | Level 3 Comms | 02/28/2003 |
| (970) 498- | landline | Ft Collins | Qwest Corp. | 02/11/1995 |
| (970) 499- | landline | Red Feather Lakes | 360networks (usa) | 08/03/2007 |
| (970) 506- | landline | Greeley | Qwest Corp. | 04/15/1996 |
| (970) 507- | landline | Pagosa Spgs | 360networks (usa) | 07/10/2007 |
| (970) 508- | landline | Durango | Grand Valley Internet | 01/27/2005 |
| (970) 509- | wireless | Granby | Verizon Wireless | 02/11/1995 |
| (970) 510- | landline | Carbondale | 360networks (usa) | 11/08/2006 |
| (970) 512- | landline | Dove Creek | 360networks (usa) | 07/10/2007 |
| (970) 513- | landline | Dillon | Qwest Corp. | 04/15/1996 |
| (970) 514- | landline | Akron | 360networks (usa) | 07/09/2007 |
| (970) 515- | landline | Greeley | AT&T; Local | 02/27/1999 |
| (970) 516- | landline | Cortez | Farmers Telecom | 09/01/2010 |
| (970) 518- | wireless | Greeley | Sprint | 02/27/1999 |
| (970) 519- | wireless | Ridgway | Verizon Wireless | 07/06/1997 |
| (970) 520- | wireless | Sterling | N.e. Colorado Cellular | 02/11/1995 |
| (970) 521- | landline | Sterling | Qwest Corp. | 02/11/1995 |
| (970) 522- | landline | Sterling | Qwest Corp. | 02/11/1995 |
| (970) 523- | landline | Grand Jct | Qwest Corp. | 02/11/1995 |
| (970) 524- | landline | Gypsum | Centurytel DBA Centurylink | 02/11/1995 |
| (970) 526- | landline | Sterling | Qwest Corp. | 10/13/1999 |
| (970) 527- | landline | Paonia | Delta County Tele - Comm | 02/11/1995 |
| (970) 528- | landline | Berthoud | Peerless Network | 04/10/2013 |
| (970) 529- | landline | Cortez | Qwest Corp. | 02/11/1995 |
| (970) 530- | landline | Ft Collins | Mcleodusa Telecom Services | 06/28/2001 |
| (970) 531- | wireless | Granby | Verizon Wireless | 02/11/1995 |
| (970) 532- | landline | Berthoud | Qwest Corp. | 02/11/1995 |
| (970) 533- | landline | Mancos | Qwest Corp. | 02/11/1995 |
| (970) 534- | wireless | Greeley | Sprint | 01/25/1998 |
| (970) 535- | landline | Mead | Qwest Corp. | 02/11/1995 |
| (970) 536- | Broadvox-clec | 05/19/2014 | ||
| (970) 537- | wireless | Kremmling | Union TelephoneCo. | 02/11/1995 |
| (970) 538- | landline | Ridgway | Grand Valley Internet | 01/27/2005 |
| (970) 539- | wireless | Greeley | Sprint | 02/11/1995 |
| (970) 540- | landline | Delta | Grand Valley Internet | 01/27/2005 |
| (970) 541- | landline | Fort Collins | Teleport Comms America | 06/01/2010 |
| (970) 542- | landline | Fort Morgan | Qwest Corp. | 02/11/1995 |
| (970) 544- | landline | Aspen | Qwest Corp. | 02/11/1995 |
| (970) 545- | wireless | Windsor | Leap Wireless Intl DBA Cricket Comm | 11/07/2001 |
| (970) 547- | landline | Breckenridge | Qwest Corp. | 02/11/1995 |
| (970) 548- | landline | Dinosaur | 360networks (usa) | 07/10/2007 |
| (970) 549- | landline | Grand Jct | Bresnan Broadband | 02/13/2012 |
| (970) 550- | landline | Dinosaur | 360networks (usa) | 07/09/2007 |
| (970) 551- | wireless | Hesperus | Cingular Wireless | 07/29/2003 |
| (970) 553- | wireless | Ignacio | Cingular Wireless | 07/29/2003 |
| (970) 554- | wireless | Akron | N.e. Colorado Cellular | 02/11/1995 |
| (970) 556- | wireless | Ft Collins | Sprint | 08/14/1998 |
| (970) 557- | landline | Granby | Level 3 Comms | 09/03/2002 |
| (970) 560- | wireless | Cortez | Verizon Wireless | 02/11/1995 |
| (970) 562- | landline | Pleasant View | Farmers Telco | 02/11/1995 |
| (970) 563- | landline | Ignacio | Centurytel DBA Centurylink | 02/11/1995 |
| (970) 564- | landline | Cortez | Qwest Corp. | 02/11/1995 |
| (970) 565- | landline | Cortez | Qwest Corp. | 02/11/1995 |
| (970) 566- | wireless | Ft Collins | Sprint | 02/11/1995 |
| (970) 567- | wireless | Ft Collins | Sprint | 01/25/1998 |
| (970) 568- | landline | Wellington | Qwest Corp. | 02/11/1995 |
| (970) 569- | landline | Vail | Centurytel DBA Centurylink | 10/13/1999 |
| (970) 570- | wireless | Cortez | Verizon Wireless | 07/06/1997 |
| (970) 571- | wireless | Sterling | Verizon Wireless | 10/11/1997 |
| (970) 572- | landline | Rangely | 360networks (usa) | 07/10/2007 |
| (970) 573- | wireless | Greeley | Verizon Wireless | 01/11/2011 |
| (970) 574- | wireless | Dinosaur | Union TelephoneCo. | 02/11/1995 |
| (970) 575- | wireless | Granby | Sprint | 10/16/2002 |
| (970) 576- | wireless | Greeley | Sprint | 10/16/2002 |
| (970) 577- | landline | Estes Park | Qwest Corp. | 07/04/1995 |
| (970) 578- | landline | Johnstown | Mcleodusa Telecom Services | 03/29/2010 |
| (970) 579- | landline | De Beque | 360networks (usa) | 04/17/2007 |
| (970) 580- | wireless | Sterling | Verizon Wireless | 02/11/1995 |
| (970) 581- | wireless | Ft Collins | T-mobile USA | 06/13/2000 |
| (970) 582- | wireless | Pagosa Spgs | Sprint | 02/23/2007 |
| (970) 583- | landline | Slater | Dubois Telephone Exchange | 10/11/1997 |
| (970) 584- | wireless | Greeley | T-mobile USA | 08/14/1998 |
| (970) 585- | landline | Pagosa Spgs | Fasttrack Comms | 06/01/2006 |
| (970) 586- | landline | Estes Park | Qwest Corp. | 02/11/1995 |
| (970) 587- | landline | Johnstown | Qwest Corp. | 02/11/1995 |
| (970) 588- | landline | Hesperus | Centurytel DBA Centurylink | 02/11/1995 |
| (970) 589- | wireless | Grand Jct | Verizon Wireless | 01/25/2007 |
| (970) 590- | wireless | Greeley | Verizon Wireless | 02/11/1995 |
| (970) 591- | landline | Estes Park | Peerless Network | 04/10/2013 |
| (970) 592- | landline | Wray | 360networks (usa) | 07/10/2007 |
| (970) 593- | landline | Loveland | Qwest Corp. | 02/11/1995 |
| (970) 594- | landline | Walden | 360networks (usa) | 07/10/2007 |
| (970) 595- | wireless | Eckley | Verizon Wireless | 10/11/1997 |
| (970) 596- | wireless | Montrose | Verizon Wireless | 02/11/1995 |
| (970) 597- | wireless | Eckley | Verizon Wireless | 02/11/1995 |
| (970) 599- | wireless | Loveland | Leap Wireless Intl DBA Cricket Comm | 08/19/2008 |
| (970) 600- | wireless | Windsor | Telstar Comms | 04/12/2010 |
| (970) 601- | landline | Mead | 360networks (usa) | 11/08/2012 |
| (970) 609- | landline | Grand Jct | Grand Valley Internet | 01/27/2005 |
| (970) 610- | landline | Fruita | Grand Valley Internet | 01/27/2005 |
| (970) 612- | landline | Loveland | Mcleodusa Telecom Services | 06/28/2001 |
| (970) 613- | landline | Loveland | Qwest Corp. | 10/11/1997 |
| (970) 614- | landline | La Salle | 360networks (usa) | 03/27/2005 |
| (970) 615- | wireless | Montrose | Verizon Wireless | 10/04/2012 |
| (970) 616- | landline | Greeley | Bandwidth.com | 09/19/2011 |
| (970) 618- | wireless | Glenwood Springs | Verizon Wireless | 04/15/1996 |
| (970) 619- | landline | Loveland | Qwest Corp. | 07/04/1995 |
| (970) 620- | wireless | Craig | Verizon Wireless | 07/06/1997 |
| (970) 621- | wireless | Berthoud | Contact Paging | 10/15/1996 |
| (970) 622- | landline | Loveland | Qwest Corp. | 07/01/1996 |
| (970) 623- | wireless | Grand Jct | Verizon Wireless | 06/19/2006 |
| (970) 624- | landline | Loveland | Qwest Corp. | 03/14/2006 |
| (970) 625- | landline | Rifle | Qwest Corp. | 02/11/1995 |
| (970) 626- | landline | Ridgway | Qwest Corp. | 02/11/1995 |
| (970) 627- | landline | Grand Lake | Qwest Corp. | 02/11/1995 |
| (970) 628- | landline | Grand Jct | Bresnan Broadband | 01/07/2011 |
| (970) 629- | wireless | Craig | Verizon Wireless | 10/15/1996 |
| (970) 630- | wireless | Yuma | N.e. Colorado Cellular | 02/11/1995 |
| (970) 631- | wireless | Ft Collins | Sprint | 10/26/2001 |
| (970) 633- | landline | Ridgway | Bandwidth.com | 02/11/2010 |
| (970) 635- | landline | Loveland | Qwest Corp. | 02/11/1995 |
| (970) 636- | landline | Oak Creek | Peerless Network | 09/17/2013 |
| (970) 638- | landline | Toponas | Qwest Corp. | 02/11/1995 |
| (970) 639- | landline | Fruita | Level 3 Comms | 10/27/2004 |
| (970) 640- | wireless | Grand Jct | Verizon Wireless | 10/13/1999 |
| (970) 641- | landline | Gunnison | Qwest Corp. | 02/11/1995 |
| (970) 642- | landline | Gunnison | Qwest Corp. | 07/22/1999 |
| (970) 644- | landline | Grand Jct | Peerless Network | 11/20/2012 |
| (970) 645- | landline | Weldona | Qwest Corp. | 02/11/1995 |
| (970) 646- | wireless | Loveland | Leap Wireless Intl DBA Cricket Comm | 12/10/2009 |
| (970) 648- | landline | Gunnison | Sprint CommsCo., | 02/05/2007 |
| (970) 649- | landline | Rifle | Grand Valley Internet | 01/31/2005 |
| (970) 650- | landline | Montrose | Grand Valley Internet | 01/27/2005 |
| (970) 653- | landline | Mc Coy | Centurytel DBA Centurylink | 02/11/1995 |
| (970) 655- | wireless | Granby | Union TelephoneCo. | 02/11/1995 |
| (970) 656- | landline | Briggsdale | Wiggins Telephone Association | 02/11/1995 |
| (970) 658- | landline | Ft Collins | Level 3 Comms | 03/14/2011 |
| (970) 660- | landline | Johnstown | Level 3 Comms | 10/27/2004 |
| (970) 661- | landline | Bayfield | Peerless Network | 04/10/2013 |
| (970) 662- | landline | Carr | Qwest Corp. | 01/10/1996 |
| (970) 663- | landline | Loveland | Qwest Corp. | 02/11/1995 |
| (970) 664- | landline | Flagler | Plains Cooperative Telephone Association | 02/11/1995 |
| (970) 665- | landline | Rifle | Qwest Corp. | 04/21/2008 |
| (970) 667- | landline | Loveland | Qwest Corp. | 02/11/1995 |
| (970) 668- | landline | Dillon | Qwest Corp. | 02/11/1995 |
| (970) 669- | landline | Loveland | Qwest Corp. | 02/11/1995 |
| (970) 670- | landline | Berthoud | Eschelon Telecom | 03/27/2005 |
| (970) 672- | landline | Ft Collins | Level 3 Comms | 09/11/2001 |
| (970) 673- | landline | Greeley | Level 3 Comms | 09/11/2001 |
| (970) 674- | landline | Windsor | Qwest Corp. | 11/20/1998 |
| (970) 675- | landline | Rangely | Centurytel DBA Centurylink | 02/11/1995 |
| (970) 676- | landline | Dolores | 360networks (usa) | 10/15/2007 |
| (970) 677- | landline | Dove Creek | Centurytel DBA Centurylink | 02/11/1995 |
| (970) 679- | landline | Loveland | Qwest Corp. | 02/11/1995 |
| (970) 680- | landline | Platteville | 360networks (usa) | 03/27/2005 |
| (970) 681- | wireless | Greeley | Contact Paging | 10/15/1996 |
| (970) 682- | wireless | Ft Collins | Verizon Wireless | 08/10/2010 |
| (970) 683- | landline | Grand Jct | Qwest Corp. | 09/14/2001 |
| (970) 684- | landline | Palisade | Grand Valley Internet | 01/31/2005 |
| (970) 685- | wireless | Loveland | Verizon Wireless | 02/04/2008 |
| (970) 686- | landline | Windsor | Qwest Corp. | 02/11/1995 |
| (970) 688- | landline | Vail | Level 3 Comms | 07/18/2002 |
| (970) 689- | wireless | Ft Collins | Sprint | 10/11/1997 |
| (970) 690- | wireless | Ft Collins | T-mobile USA | 04/01/1997 |
| (970) 691- | wireless | Ft Collins | T-mobile USA | 02/27/1999 |
| (970) 692- | wireless | Ft Collins | Sprint | 02/27/1999 |
| (970) 695- | landline | Mesa | 360networks (usa) | 06/22/2007 |
| (970) 697- | landline | Grand Jct | Interlink Adv Svc D/b/a Forethought.net | 04/01/2014 |
| (970) 699- | Verizon Wireless | 07/10/2014 | ||
| (970) 701- | wireless | Craig | Sprint | 10/31/2000 |
| (970) 703- | landline | Platteville | 360networks (usa) | 03/27/2005 |
| (970) 704- | landline | Carbondale | Qwest Corp. | 04/15/1996 |
| (970) 707- | landline | Gunnison | Time Warner Cable (colorado), CO | 12/07/2011 |
| (970) 708- | wireless | Ridgway | Verizon Wireless | 07/04/1995 |
| (970) 710- | wireless | Aspen | Sprint | 06/13/2000 |
| (970) 712- | wireless | Grand Jct | Verizon Wireless | 09/07/2007 |
| (970) 713- | landline | Crested Butte | Peerless Network | 04/10/2013 |
| (970) 716- | landline | Eaton | 360networks (usa) | 11/08/2006 |
| (970) 717- | landline | Hayden | Bandwidth.com | 01/23/2012 |
| (970) 718- | landline | Basalt | Peerless Network | 04/10/2013 |
| (970) 722- | landline | Nederland | Qwest Corp. | 01/14/2000 |
| (970) 723- | landline | Walden | Centurytel DBA Centurylink | 02/11/1995 |
| (970) 724- | landline | Kremmling | Qwest Corp. | 02/11/1995 |
| (970) 725- | landline | Parshall | Qwest Corp. | 02/11/1995 |
| (970) 726- | landline | Nederland | Qwest Corp. | 02/11/1995 |
| (970) 728- | landline | Ridgway | Qwest Corp. | 02/11/1995 |
| (970) 729- | wireless | Ridgway | Cingular Wireless | 05/04/2001 |
| (970) 731- | landline | Pagosa Springs | Centurytel DBA Centurylink | 02/11/1995 |
| (970) 734- | wireless | Steamboat Springs | Union TelephoneCo. | 02/11/1995 |
| (970) 735- | landline | Stoneham | Stoneham Cooperative Telco | 02/11/1995 |
| (970) 736- | landline | Oak Creek | Qwest Corp. | 02/11/1995 |
| (970) 737- | landline | Platteville | Qwest Corp. | 02/11/1995 |
| (970) 739- | wireless | Cortez | Cingular Wireless | 01/11/1997 |
| (970) 744- | landline | Loveland | Level 3 Comms | 12/17/2002 |
| (970) 745- | wireless | Grand Jct | Union TelephoneCo. | 04/12/2010 |
| (970) 748- | landline | Vail | Qwest Corp. | 01/11/1997 |
| (970) 749- | wireless | Durango | Cingular Wireless | 02/11/1995 |
| (970) 750- | wireless | Walden | Union TelephoneCo. | 01/20/2004 |
| (970) 751- | wireless | Delta | Union TelephoneCo. | 05/08/2012 |
| (970) 752- | landline | Dillon | Qwest Corp. | 05/18/1998 |
| (970) 754- | landline | Vail | San Isabel Telecom | 08/09/2002 |
| (970) 755- | wireless | Rangely | Union TelephoneCo. | 01/20/2004 |
| (970) 756- | wireless | Craig | Union TelephoneCo. | 12/18/2003 |
| (970) 757- | wireless | Hayden | Union TelephoneCo. | 01/20/2004 |
| (970) 758- | wireless | Granby | Union TelephoneCo. | 01/20/2004 |
| (970) 759- | wireless | Durango | Cingular Wireless | 10/11/1997 |
| (970) 760- | landline | Dillon | Level 3 Comms | 06/17/2002 |
| (970) 761- | landline | Steamboat Springs | Sprint | 06/17/2002 |
| (970) 762- | landline | Sterling | Icg Telecom Group | 06/17/2002 |
| (970) 763- | landline | Vail | Icg Telecom Group | 06/17/2002 |
| (970) 764- | landline | Durango | Qwest Corp. | 06/17/2002 |
| (970) 765- | landline | Montrose | Level 3 Comms | 06/17/2002 |
| (970) 766- | landline | Vail | San Isabel Telecom | 04/09/2003 |
| (970) 767- | wireless | Ft Collins | Union TelephoneCo. | 04/12/2010 |
| (970) 768- | wireless | Fort Morgan | N.e. Colorado Cellular | 02/11/1995 |
| (970) 769- | wireless | Durango | Cingular Wireless | 10/29/2002 |
| (970) 770- | wireless | Montrose | Union TelephoneCo. | 05/08/2012 |
| (970) 771- | Comcast Phone | 05/12/2014 | ||
| (970) 773- | wireless | Grand Jct | Verizon Wireless | 01/23/2009 |
| (970) 774- | landline | Haxtun | Haxtun Telco | 02/11/1995 |
| (970) 775- | wireless | Loveland | Leap Wireless Intl DBA Cricket Comm | 05/12/2009 |
| (970) 776- | landline | Loveland | AT&T; Local | 06/30/2001 |
| (970) 777- | landline | Gypsum | San Isabel Telecom | 04/08/2003 |
| (970) 778- | landline | Grand Jct | Level 3 Comms | 02/13/2002 |
| (970) 779- | wireless | Durango | T-mobile USA | 01/21/2003 |
| (970) 784- | landline | Gunnison | Grand Valley Internet | 01/27/2005 |
| (970) 785- | landline | Platteville | Qwest Corp. | 02/11/1995 |
| (970) 788- | landline | Ignacio | 360networks (usa) | 07/09/2007 |
| (970) 790- | landline | Vail | San Isabel Telecom | 11/21/2003 |
| (970) 795- | landline | Windsor | Pac - West Telecomm | 01/30/2006 |
| (970) 797- | landline | Ft Collins | Xo Colorado | 03/13/2002 |
| (970) 798- | landline | Grand Lake | 360networks (usa) | 10/26/2006 |
| (970) 799- | wireless | Durango | Cingular Wireless | 04/30/2001 |
| (970) 800- | landline | Loveland | 360networks (usa) | 11/08/2012 |
| (970) 805- | landline | Mead | Level 3 Comms | 01/30/2006 |
| (970) 808- | landline | Delta | 360networks (usa) | 01/12/2011 |
| (970) 812- | landline | Grand Jct | Level 3 Comms | 06/30/2001 |
| (970) 815- | wireless | Greeley | T-mobile USA | 03/05/2014 |
| (970) 817- | wireless | Ft Collins | Verizon Wireless | 03/12/2009 |
| (970) 818- | landline | Ft Collins | MCI Metro ATS | 11/30/2009 |
| (970) 819- | wireless | Steamboat Springs | Verizon Wireless | 07/06/1997 |
| (970) 823- | landline | Olathe | Level 3 Comms | 05/12/2008 |
| (970) 824- | landline | Craig | Qwest Corp. | 02/11/1995 |
| (970) 826- | landline | Craig | Qwest Corp. | 01/25/1998 |
| (970) 827- | landline | Vail | Qwest Corp. | 02/11/1995 |
| (970) 828- | landline | Durango | Fasttrack Comms | 05/12/2006 |
| (970) 830- | landline | Parachute | Grand Valley Internet | 01/31/2005 |
| (970) 833- | landline | Windsor | MCI Metro ATS | 12/03/2013 |
| (970) 834- | landline | Eaton | Qwest Corp. | 02/11/1995 |
| (970) 835- | landline | Eckert | Delta County Tele - Comm | 02/11/1995 |
| (970) 840- | landline | Brush | Pac - West Telecomm | 01/30/2006 |
| (970) 842- | landline | Brush | Qwest Corp. | 02/11/1995 |
| (970) 845- | landline | Vail | Qwest Corp. | 02/11/1995 |
| (970) 846- | wireless | Steamboat Springs | Verizon Wireless | 02/11/1995 |
| (970) 847- | landline | Hillrose | Qwest Corp. | 02/11/1995 |
| (970) 848- | landline | Yuma | Centurytel DBA Centurylink | 07/04/1995 |
| (970) 854- | landline | Holyoke | Phillips County Telco | 02/11/1995 |
| (970) 855- | landline | Edwards | Comcast Phone | 12/02/2011 |
| (970) 856- | landline | Cedaredge | Delta County Tele - Comm | 02/11/1995 |
| (970) 858- | landline | Fruita | Qwest Corp. | 02/11/1995 |
| (970) 859- | landline | Bedrock | Nucla - Naturita Telco | 02/11/1995 |
| (970) 862- | landline | Cimarron | Nucla - Naturita Telco | 02/11/1995 |
| (970) 864- | landline | Nucla | Nucla - Naturita Telco | 02/11/1995 |
| (970) 865- | landline | Nucla | Nucla - Naturita Telco | 02/11/1995 |
| (970) 867- | landline | Fort Morgan | Qwest Corp. | 02/11/1995 |
| (970) 870- | landline | Steamboat Springs | Qwest Corp. | 02/11/1995 |
| (970) 871- | landline | Steamboat Springs | Qwest Corp. | 10/15/1996 |
| (970) 872- | landline | Hotchkiss | Delta County Tele - Comm | 02/11/1995 |
| (970) 873- | wireless | Walden | Union TelephoneCo. | 02/11/1995 |
| (970) 874- | landline | Delta | Qwest Corp. | 02/11/1995 |
| (970) 875- | landline | Steamboat Springs | Qwest Corp. | 03/03/2001 |
| (970) 876- | landline | Silt | Qwest Corp. | 02/11/1995 |
| (970) 878- | landline | Meeker | Qwest Corp. | 02/11/1995 |
| (970) 879- | landline | Steamboat Springs | Qwest Corp. | 02/11/1995 |
| (970) 881- | landline | Red Feather Lakes | Centurytel DBA Centurylink | 02/11/1995 |
| (970) 882- | landline | Dolores | Centurytel DBA Centurylink | 02/11/1995 |
| (970) 883- | landline | Ignacio | Centurytel DBA Centurylink | 02/11/1995 |
| (970) 884- | landline | Bayfield | Qwest Corp. | 02/11/1995 |
| (970) 885- | landline | Julesburg | Qwest Corp. | 01/10/1996 |
| (970) 886- | landline | Crook | Haxtun Telco | 02/11/1995 |
| (970) 887- | landline | Granby | Qwest Corp. | 02/11/1995 |
| (970) 888- | landline | Greeley | Onvoy | 11/08/2012 |
| (970) 889- | wireless | Ft Collins | T-mobile USA | 10/18/2013 |
| (970) 895- | landline | Grover | Wiggins Telephone Association | 02/11/1995 |
| (970) 897- | landline | Nunn | Nunn Telco | 02/11/1995 |
| (970) 898- | landline | Ft Collins | Icg Telecom Group | 10/11/1997 |
| (970) 901- | wireless | Montrose | Verizon Wireless | 02/11/1995 |
| (970) 903- | wireless | Durango | Verizon Wireless | 04/15/1996 |
| (970) 904- | wireless | Vail | Sprint | 08/14/1998 |
| (970) 914- | wireless | Vail | Sprint | 08/14/1998 |
| (970) 920- | landline | Aspen | Qwest Corp. | 02/11/1995 |
| (970) 921- | landline | Crawford | Delta County Tele - Comm | 02/11/1995 |
| (970) 922- | landline | Aspen | Qwest Corp. | 10/13/1999 |
| (970) 923- | landline | Aspen | Qwest Corp. | 02/11/1995 |
| (970) 924- | landline | Aspen | Qwest Corp. | 05/30/2007 |
| (970) 925- | landline | Aspen | Qwest Corp. | 02/11/1995 |
| (970) 926- | landline | Vail | Centurytel DBA Centurylink | 02/11/1995 |
| (970) 927- | landline | Basalt | Qwest Corp. | 02/11/1995 |
| (970) 928- | landline | Glenwood Springs | Qwest Corp. | 02/11/1995 |
| (970) 929- | landline | Somerset | Delta County Tele - Comm | 02/11/1995 |
| (970) 930- | wireless | Glenwood Springs | Sprint | 02/27/1999 |
| (970) 931- | landline | Gateway | Nucla - Naturita Telco | 02/11/1995 |
| (970) 942- | wireless | Meeker | Union TelephoneCo. | 02/11/1995 |
| (970) 943- | landline | Gunnison | Qwest Corp. | 02/11/1995 |
| (970) 944- | landline | Lake City | Centurytel DBA Centurylink | 02/11/1995 |
| (970) 945- | landline | Glenwood Springs | Qwest Corp. | 02/11/1995 |
| (970) 946- | wireless | Durango | Verizon Wireless | 02/11/1995 |
| (970) 947- | landline | Glenwood Springs | Qwest Corp. | 10/15/1996 |
| (970) 948- | wireless | Glenwood Springs | Cingular Wireless | 02/11/1995 |
| (970) 949- | landline | Vail | Qwest Corp. | 02/11/1995 |
| (970) 962- | landline | Loveland | Qwest Corp. | 02/11/1995 |
| (970) 963- | landline | Carbondale | Qwest Corp. | 02/11/1995 |
| (970) 964- | wireless | Montrose | 360networks (usa) | 02/27/1999 |
| (970) 967- | landline | Mancos | Rico Telco | 02/11/1995 |
| (970) 968- | landline | Breckenridge | Qwest Corp. | 02/11/1995 |
| (970) 977- | wireless | Vail | Sprint | 02/27/1999 |
| (970) 978- | wireless | Greeley | Sprint | 01/25/1998 |
| (970) 980- | wireless | Ft Collins | Sprint | 02/27/1999 |
| (970) 984- | landline | New Castle | Qwest Corp. | 02/11/1995 |
| (970) 985- | wireless | Grand Jct | Sprint | 02/27/1999 |
| (970) 986- | wireless | Grand Jct | Sprint | 11/20/1998 |
| (970) 987- | wireless | Glenwood Springs | Verizon Wireless | 08/14/1998 |
| (970) 988- | wireless | Ft Collins | Sprint | 05/18/1998 |
| (970) 989- | wireless | Glenwood Springs | Sprint | 08/14/1998 |
| (970) 999- | landline | Ft Collins | 360networks (usa) | 11/08/2012 |