Phone numbers in Fort Collins, Colorado
Fort Collins has 96 phone prefixes in area code 970.
Biggest holders: CenturyLink / Lumen, T-Mobile (including Sprint), AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 42%
- Local phone company 33%
- Internet / business phone carrier 25%
Every prefix in Fort Collins
Search the first six digits of a number in this list. If it's here, the number started in Fort Collins with the carrier shown. If it isn't, check the Colorado page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 970-204 | CenturyLink / Lumen | Local phone company | – |
| 970-206 | CenturyLink / Lumen | Local phone company | – |
| 970-207 | CenturyLink / Lumen | Local phone company | – |
| 970-212 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 970-213 | T-Mobile (including Sprint) | Mobile carrier | – |
| 970-214 | AT&T Mobility | Mobile carrier | – |
| 970-215 | AT&T Mobility | Mobile carrier | – |
| 970-217 | Verizon Wireless | Mobile carrier | – |
| 970-218 | Verizon Wireless | Mobile carrier | – |
| 970-219 | Verizon Wireless | Mobile carrier | – |
| 970-221 | CenturyLink / Lumen | Local phone company | – |
| 970-222 | Verizon Wireless | Mobile carrier | – |
| 970-223 | CenturyLink / Lumen | Local phone company | – |
| 970-224 | CenturyLink / Lumen | Local phone company | – |
| 970-225 | CenturyLink / Lumen | Local phone company | – |
| 970-226 | CenturyLink / Lumen | Local phone company | – |
| 970-227 | AT&T Mobility | Mobile carrier | – |
| 970-229 | CenturyLink / Lumen | Local phone company | – |
| 970-231 | AT&T Mobility | Mobile carrier | – |
| 970-232 | Comcast | Internet / business phone carrier | – |
| 970-237 | CenturyLink / Lumen | Local phone company | 2007 |
| 970-266 | CenturyLink / Lumen | Local phone company | – |
| 970-267 | CenturyLink / Lumen | Local phone company | – |
| 970-282 | CenturyLink / Lumen | Local phone company | – |
| 970-286 | AT&T Mobility | Mobile carrier | 2011 |
| 970-288 | CenturyLink / Lumen | Local phone company | – |
| 970-294 | T-Mobile (including Sprint) | Mobile carrier | 2014 |
| 970-295 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 970-297 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 970-305 | Verizon Wireless | Mobile carrier | 2012 |
| 970-310 | T-Mobile (including Sprint) | Mobile carrier | – |
| 970-372 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 970-377 | CenturyLink / Lumen | Local phone company | – |
| 970-391 | T-Mobile (including Sprint) | Mobile carrier | – |
| 970-402 | T-Mobile (including Sprint) | Mobile carrier | – |
| 970-407 | CenturyLink / Lumen | Local phone company | – |
| 970-412 | T-Mobile (including Sprint) | Mobile carrier | – |
| 970-413 | AT&T Mobility | Mobile carrier | 2014 |
| 970-416 | CenturyLink / Lumen | Local phone company | – |
| 970-419 | CenturyLink / Lumen | Local phone company | – |
| 970-420 | Verizon Wireless | Mobile carrier | – |
| 970-430 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 970-443 | AT&T Mobility | Mobile carrier | 2001 |
| 970-449 | Allstream | Internet / business phone carrier | – |
| 970-472 | CenturyLink / Lumen | Local phone company | – |
| 970-481 | AT&T Mobility | Mobile carrier | – |
| 970-482 | CenturyLink / Lumen | Local phone company | – |
| 970-484 | CenturyLink / Lumen | Local phone company | – |
| 970-488 | CenturyLink / Lumen | Local phone company | 2005 |
| 970-490 | CenturyLink / Lumen | Local phone company | – |
| 970-491 | CenturyLink / Lumen | Local phone company | – |
| 970-492 | CenturyLink / Lumen | Local phone company | 2002 |
| 970-493 | CenturyLink / Lumen | Local phone company | – |
| 970-494 | CenturyLink / Lumen | Local phone company | – |
| 970-495 | CenturyLink / Lumen | Local phone company | – |
| 970-498 | CenturyLink / Lumen | Local phone company | – |
| 970-530 | Windstream (PAETEC) | Internet / business phone carrier | 2001 |
| 970-556 | T-Mobile (including Sprint) | Mobile carrier | – |
| 970-566 | T-Mobile (including Sprint) | Mobile carrier | – |
| 970-567 | T-Mobile (including Sprint) | Mobile carrier | – |
| 970-568 | CenturyLink / Lumen | Local phone company | – |
| 970-581 | T-Mobile (including Sprint) | Mobile carrier | – |
| 970-631 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 970-632 | Onvoy | Internet / business phone carrier | 2016 |
| 970-657 | Comcast | Internet / business phone carrier | 2017 |
| 970-658 | Level 3 (Lumen) | Internet / business phone carrier | 2011 |
| 970-666 | Onvoy | Internet / business phone carrier | 2017 |
| 970-672 | Level 3 (Lumen) | Internet / business phone carrier | 2001 |
| 970-682 | Verizon Wireless | Mobile carrier | 2010 |
| 970-689 | T-Mobile (including Sprint) | Mobile carrier | – |
| 970-690 | T-Mobile (including Sprint) | Mobile carrier | – |
| 970-691 | T-Mobile (including Sprint) | Mobile carrier | – |
| 970-692 | T-Mobile (including Sprint) | Mobile carrier | – |
| 970-694 | T-Mobile (including Sprint) | Mobile carrier | 2020 |
| 970-698 | Verizon Wireless | Mobile carrier | 2017 |
| 970-732 | Fractel | Internet / business phone carrier | 2019 |
| 970-767 | Union Telephone | Local phone company | 2010 |
| 970-792 | T-Mobile (including Sprint) | Mobile carrier | 2020 |
| 970-797 | MCImetro (Verizon Business) | Internet / business phone carrier | 2002 |
| 970-817 | Verizon Wireless | Mobile carrier | 2009 |
| 970-818 | MCImetro (Verizon Business) | Internet / business phone carrier | 2009 |
| 970-821 | CenturyLink / Lumen | Local phone company | 2015 |
| 970-825 | T-Mobile (including Sprint) | Mobile carrier | 2014 |
| 970-829 | AT&T Mobility | Mobile carrier | 2014 |
| 970-837 | TON80 Communications | Internet / business phone carrier | 2020 |
| 970-851 | MCImetro (Verizon Business) | Internet / business phone carrier | 2023 |
| 970-889 | T-Mobile (including Sprint) | Mobile carrier | 2013 |
| 970-893 | Onvoy | Internet / business phone carrier | 2016 |
| 970-898 | Teleport Communications America | Internet / business phone carrier | – |
| 970-900 | Onvoy | Internet / business phone carrier | 2015 |
| 970-907 | Onvoy | Internet / business phone carrier | 2025 |
| 970-938 | Onvoy | Internet / business phone carrier | 2026 |
| 970-971 | TDS Broadband Service | Internet / business phone carrier | 2025 |
| 970-980 | T-Mobile (including Sprint) | Mobile carrier | – |
| 970-988 | T-Mobile (including Sprint) | Mobile carrier | – |
| 970-999 | Onvoy | Internet / business phone carrier | 2012 |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.