Phone numbers in Fontana, California
Fontana has 82 phone prefixes in area codes 840, 909.
Biggest holders: MetroPCS (T-Mobile), T-Mobile (including Sprint), Verizon Wireless. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 62%
- Local phone company 17%
- Internet / business phone carrier 18%
- Phone company 2%
Every prefix in Fontana
Search the first six digits of a number in this list. If it's here, the number started in Fontana with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 840-201 | AT&T Mobility | Mobile carrier | 2021 |
| 840-210 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 840-217 | T-Mobile (including Sprint) | Mobile carrier | 2022 |
| 840-232 | T-Mobile (including Sprint) | Mobile carrier | 2023 |
| 840-239 | Onvoy | Internet / business phone carrier | 2023 |
| 840-248 | T-Mobile (including Sprint) | Mobile carrier | 2023 |
| 840-261 | AT&T Mobility | Mobile carrier | 2024 |
| 840-263 | AT&T Mobility | Mobile carrier | 2024 |
| 840-271 | Verizon Wireless | Mobile carrier | 2025 |
| 840-285 | Onvoy | Internet / business phone carrier | 2025 |
| 840-666 | Fractel | Internet / business phone carrier | 2020 |
| 840-788 | Fractel | Internet / business phone carrier | 2021 |
| 909-200 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 909-201 | Dmr Communications | Phone company | 2006 |
| 909-202 | Verizon Wireless | Mobile carrier | 2007 |
| 909-231 | MetroPCS (T-Mobile) | Mobile carrier | 2007 |
| 909-232 | MetroPCS (T-Mobile) | Mobile carrier | 2007 |
| 909-251 | Charter / Spectrum | Internet / business phone carrier | 2007 |
| 909-275 | AT&T Enterprises | Phone company | 2006 |
| 909-278 | MetroPCS (T-Mobile) | Mobile carrier | 2007 |
| 909-279 | Bandwidth | Internet / business phone carrier | 2010 |
| 909-302 | AT&T (local phone) | Local phone company | 2011 |
| 909-320 | Verizon Wireless | Mobile carrier | 2010 |
| 909-329 | Verizon Wireless | Mobile carrier | 2011 |
| 909-333 | Bandwidth | Internet / business phone carrier | – |
| 909-346 | MetroPCS (T-Mobile) | Mobile carrier | 2012 |
| 909-347 | Bandwidth | Internet / business phone carrier | 2012 |
| 909-349 | AT&T (local phone) | Local phone company | – |
| 909-350 | AT&T (local phone) | Local phone company | – |
| 909-355 | AT&T (local phone) | Local phone company | – |
| 909-356 | AT&T (local phone) | Local phone company | – |
| 909-357 | AT&T (local phone) | Local phone company | – |
| 909-365 | Verizon Wireless | Mobile carrier | 2016 |
| 909-368 | MetroPCS (T-Mobile) | Mobile carrier | 2012 |
| 909-371 | MetroPCS (T-Mobile) | Mobile carrier | 2013 |
| 909-401 | MetroPCS (T-Mobile) | Mobile carrier | 2017 |
| 909-409 | Verizon Wireless | Mobile carrier | 2024 |
| 909-427 | AT&T (local phone) | Local phone company | – |
| 909-428 | AT&T (local phone) | Local phone company | – |
| 909-429 | AT&T (local phone) | Local phone company | – |
| 909-434 | Tpx Communications | Internet / business phone carrier | – |
| 909-441 | T-Mobile (including Sprint) | Mobile carrier | 2014 |
| 909-452 | MetroPCS (T-Mobile) | Mobile carrier | 2007 |
| 909-471 | Verizon Wireless | Mobile carrier | 2006 |
| 909-491 | Verizon Wireless | Mobile carrier | 2014 |
| 909-507 | MetroPCS (T-Mobile) | Mobile carrier | 2018 |
| 909-549 | Verizon Wireless | Mobile carrier | – |
| 909-550 | T-Mobile (including Sprint) | Mobile carrier | 2016 |
| 909-559 | MetroPCS (T-Mobile) | Mobile carrier | 2001 |
| 909-561 | T-Mobile (including Sprint) | Mobile carrier | 2004 |
| 909-565 | MetroPCS (T-Mobile) | Mobile carrier | 2006 |
| 909-574 | AT&T (local phone) | Local phone company | – |
| 909-578 | MetroPCS (T-Mobile) | Mobile carrier | 2002 |
| 909-587 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 909-600 | Verizon Wireless | Mobile carrier | – |
| 909-609 | MetroPCS (T-Mobile) | Mobile carrier | 2005 |
| 909-637 | Verizon Wireless | Mobile carrier | 2014 |
| 909-641 | AT&T Mobility | Mobile carrier | – |
| 909-642 | T-Mobile (including Sprint) | Mobile carrier | 2014 |
| 909-681 | T-Mobile (including Sprint) | Mobile carrier | 2015 |
| 909-684 | T-Mobile (including Sprint) | Mobile carrier | 2005 |
| 909-688 | T-Mobile (including Sprint) | Mobile carrier | 2016 |
| 909-695 | Bandwidth | Internet / business phone carrier | 2015 |
| 909-697 | T-Mobile (including Sprint) | Mobile carrier | 2005 |
| 909-714 | Verizon Wireless | Mobile carrier | 2004 |
| 909-728 | AT&T Mobility | Mobile carrier | 2003 |
| 909-743 | T-Mobile (including Sprint) | Mobile carrier | 2004 |
| 909-749 | MetroPCS (T-Mobile) | Mobile carrier | 2007 |
| 909-770 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 909-775 | MetroPCS (T-Mobile) | Mobile carrier | 2017 |
| 909-782 | Verizon Wireless | Mobile carrier | 2005 |
| 909-808 | Vonage America | Internet / business phone carrier | 2020 |
| 909-822 | AT&T (local phone) | Local phone company | – |
| 909-823 | AT&T (local phone) | Local phone company | – |
| 909-827 | Verizon Wireless | Mobile carrier | 2007 |
| 909-829 | AT&T (local phone) | Local phone company | – |
| 909-854 | AT&T (local phone) | Local phone company | – |
| 909-900 | MetroPCS (T-Mobile) | Mobile carrier | 2003 |
| 909-904 | AT&T Mobility | Mobile carrier | 2001 |
| 909-909 | Onvoy | Internet / business phone carrier | 2023 |
| 909-977 | Fractel | Internet / business phone carrier | 2019 |
| 909-997 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
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.