Phone numbers in Fort Lupton, Colorado
Fort Lupton has 28 phone prefixes in area codes 303, 720, 983.
Biggest holders: AT&T Mobility, Verizon Wireless, Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 64%
- Local phone company 4%
- Internet / business phone carrier 25%
- Phone company 7%
Every prefix in Fort Lupton
Search the first six digits of a number in this list. If it's here, the number started in Fort Lupton with the carrier shown. If it isn't, check the Colorado page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 303-304 | AT&T Mobility | Mobile carrier | 2004 |
| 303-502 | Verizon Wireless | Mobile carrier | 2005 |
| 303-506 | AT&T Mobility | Mobile carrier | 2001 |
| 303-535 | Onvoy | Internet / business phone carrier | – |
| 303-710 | Verizon Wireless | Mobile carrier | – |
| 303-717 | AT&T Mobility | Mobile carrier | – |
| 303-718 | Verizon Wireless | Mobile carrier | – |
| 303-720 | Verizon Wireless | Mobile carrier | 2008 |
| 303-857 | CenturyLink / Lumen | Local phone company | – |
| 303-956 | AT&T Mobility | Mobile carrier | – |
| 303-990 | T-Mobile (including Sprint) | Mobile carrier | 2006 |
| 720-383 | Verizon Wireless | Mobile carrier | 2008 |
| 720-466 | AT&T Mobility | Mobile carrier | 2010 |
| 720-538 | Verizon Wireless | Mobile carrier | 2012 |
| 720-606 | AT&T Mobility | Mobile carrier | 2011 |
| 720-683 | Bandwidth | Internet / business phone carrier | 2013 |
| 720-712 | Bandwidth | Internet / business phone carrier | 2019 |
| 720-753 | AT&T Mobility | Mobile carrier | 2015 |
| 720-802 | Onvoy | Internet / business phone carrier | 2020 |
| 720-856 | Onvoy | Internet / business phone carrier | – |
| 720-868 | Onvoy | Internet / business phone carrier | 2021 |
| 720-914 | T-Mobile (including Sprint) | Mobile carrier | 2024 |
| 720-928 | Bandwidth | Internet / business phone carrier | 2018 |
| 720-954 | Verizon Wireless | Mobile carrier | 2022 |
| 720-966 | AT&T Mobility | Mobile carrier | 2014 |
| 983-206 | Shelcomm | Phone company | 2024 |
| 983-209 | T-Mobile (including Sprint) | Mobile carrier | 2024 |
| 983-227 | Ahoi | Phone company | 2025 |
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.