Phone numbers in Colton, California
Colton has 52 phone prefixes in area codes 840, 909, 951.
Biggest holders: AT&T (local phone), Spok, Verizon Wireless. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 15%
- Local phone company 40%
- Internet / business phone carrier 29%
- Paging service 13%
- Phone company 2%
Every prefix in Colton
Search the first six digits of a number in this list. If it's here, the number started in Colton with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 840-228 | Verizon Wireless | Mobile carrier | 2023 |
| 840-235 | Commio | Internet / business phone carrier | 2023 |
| 840-257 | T-Mobile (including Sprint) | Mobile carrier | 2024 |
| 840-281 | T-Mobile (including Sprint) | Mobile carrier | 2025 |
| 840-336 | Fractel | Internet / business phone carrier | 2022 |
| 840-600 | Fractel | Internet / business phone carrier | 2021 |
| 909-213 | AT&T Mobility | Mobile carrier | 2001 |
| 909-216 | Spok | Paging service | – |
| 909-219 | Verizon Wireless | Mobile carrier | 2013 |
| 909-222 | Charter / Spectrum | Internet / business phone carrier | 2007 |
| 909-254 | Tpx Communications | Internet / business phone carrier | – |
| 909-264 | Verizon Wireless | Mobile carrier | 2008 |
| 909-370 | AT&T (local phone) | Local phone company | – |
| 909-410 | Spok | Paging service | – |
| 909-420 | AT&T (local phone) | Local phone company | – |
| 909-422 | AT&T (local phone) | Local phone company | – |
| 909-423 | AT&T (local phone) | Local phone company | – |
| 909-424 | AT&T (local phone) | Local phone company | – |
| 909-426 | AT&T (local phone) | Local phone company | – |
| 909-430 | AT&T (local phone) | Local phone company | – |
| 909-431 | AT&T (local phone) | Local phone company | – |
| 909-432 | Spok | Paging service | – |
| 909-433 | AT&T (local phone) | Local phone company | – |
| 909-439 | AT&T (local phone) | Local phone company | – |
| 909-498 | Matrix Telecom, Llc. S/i/i Tnci | Internet / business phone carrier | – |
| 909-503 | MCImetro (Verizon Business) | Internet / business phone carrier | 2001 |
| 909-512 | AT&T (local phone) | Local phone company | – |
| 909-514 | AT&T (local phone) | Local phone company | – |
| 909-533 | Level 3 (Lumen) | Internet / business phone carrier | 2006 |
| 909-535 | Spok | Paging service | – |
| 909-554 | AT&T (local phone) | Local phone company | – |
| 909-572 | Bandwidth | Internet / business phone carrier | 2014 |
| 909-580 | AT&T (local phone) | Local phone company | – |
| 909-639 | Onvoy | Internet / business phone carrier | – |
| 909-645 | AT&T Mobility | Mobile carrier | – |
| 909-653 | MCImetro (Verizon Business) | Internet / business phone carrier | 2005 |
| 909-679 | Onvoy | Internet / business phone carrier | 2016 |
| 909-692 | American Messaging Services | Paging service | – |
| 909-699 | Bandwidth | Internet / business phone carrier | – |
| 909-777 | AT&T (local phone) | Local phone company | – |
| 909-783 | AT&T (local phone) | Local phone company | – |
| 909-807 | Utility Telecom Group | Phone company | – |
| 909-814 | Spok | Paging service | – |
| 909-824 | AT&T (local phone) | Local phone company | – |
| 909-825 | AT&T (local phone) | Local phone company | – |
| 909-835 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 909-857 | American Messaging Services | Paging service | – |
| 909-872 | AT&T (local phone) | Local phone company | – |
| 909-876 | AT&T (local phone) | Local phone company | – |
| 909-953 | AT&T Mobility | Mobile carrier | 2002 |
| 909-954 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 951-431 | AT&T (local phone) | Local phone company | – |
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.