Phone numbers in Elk Grove, California
Elk Grove has 56 phone prefixes in area codes 279, 916.
Biggest holders: Frontier, T-Mobile (including Sprint), AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 32%
- Local phone company 36%
- Internet / business phone carrier 27%
- Phone company 5%
Every prefix in Elk Grove
Search the first six digits of a number in this list. If it's here, the number started in Elk Grove with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 279-207 | MetroPCS (T-Mobile) | Mobile carrier | 2020 |
| 279-209 | Twilio | Internet / business phone carrier | – |
| 279-240 | Onvoy | Internet / business phone carrier | 2023 |
| 279-249 | T-Mobile (including Sprint) | Mobile carrier | 2023 |
| 279-254 | T-Mobile (including Sprint) | Mobile carrier | 2024 |
| 279-282 | AT&T Mobility | Mobile carrier | 2024 |
| 279-290 | T-Mobile (including Sprint) | Mobile carrier | 2025 |
| 279-297 | Onvoy | Internet / business phone carrier | 2023 |
| 279-333 | Onvoy | Internet / business phone carrier | 2018 |
| 279-800 | Fractel | Internet / business phone carrier | 2019 |
| 279-867 | Commio | Internet / business phone carrier | 2022 |
| 279-901 | Onvoy | Internet / business phone carrier | 2021 |
| 916-226 | AT&T (local phone) | Local phone company | – |
| 916-230 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 916-236 | IP Horizon | Internet / business phone carrier | – |
| 916-271 | MetroPCS (T-Mobile) | Mobile carrier | 2001 |
| 916-280 | T-Mobile (including Sprint) | Mobile carrier | 2016 |
| 916-385 | T-Mobile (including Sprint) | Mobile carrier | 2013 |
| 916-405 | Frontier | Local phone company | – |
| 916-430 | AT&T Mobility | Mobile carrier | 2014 |
| 916-478 | Frontier | Local phone company | – |
| 916-479 | AT&T Mobility | Mobile carrier | – |
| 916-509 | Frontier | Local phone company | 2007 |
| 916-512 | Frontier | Local phone company | 2010 |
| 916-513 | T-Mobile (including Sprint) | Mobile carrier | 2015 |
| 916-525 | Frontier | Local phone company | – |
| 916-544 | MetroPCS (T-Mobile) | Mobile carrier | 2009 |
| 916-582 | Level 3 (Lumen) | Internet / business phone carrier | 2014 |
| 916-585 | Fidium Enterprise Services | Phone company | 2008 |
| 916-602 | AT&T Mobility | Mobile carrier | 2019 |
| 916-627 | Frontier | Local phone company | 2005 |
| 916-647 | MCImetro (Verizon Business) | Internet / business phone carrier | 2005 |
| 916-667 | Frontier | Local phone company | 2008 |
| 916-670 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 916-681 | Frontier | Local phone company | – |
| 916-682 | Frontier | Local phone company | – |
| 916-683 | Frontier | Local phone company | – |
| 916-684 | Frontier | Local phone company | – |
| 916-685 | Frontier | Local phone company | – |
| 916-686 | Frontier | Local phone company | – |
| 916-687 | Frontier | Local phone company | – |
| 916-688 | Frontier | Local phone company | – |
| 916-689 | Frontier | Local phone company | – |
| 916-690 | AT&T Mobility | Mobile carrier | – |
| 916-691 | Frontier | Local phone company | – |
| 916-714 | Frontier | Local phone company | – |
| 916-753 | Tpx Communications | Internet / business phone carrier | 2005 |
| 916-793 | T-Mobile (including Sprint) | Mobile carrier | 2015 |
| 916-818 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 916-829 | T-Mobile (including Sprint) | Mobile carrier | 2020 |
| 916-831 | Tpx Communications | Internet / business phone carrier | 2017 |
| 916-892 | Peerless Network Of California | Internet / business phone carrier | 2016 |
| 916-895 | Frontier | Local phone company | 2011 |
| 916-896 | Fidium Enterprise Services | Phone company | 2010 |
| 916-897 | Fidium Enterprise Services | Phone company | 2006 |
| 916-937 | Telnyx | Internet / business phone carrier | 2021 |
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.