Phone numbers in Okld Trnid, California
Okld Trnid has 66 phone prefixes in area codes 341, 510.
Biggest holders: AT&T (local phone), T-Mobile (including Sprint), MCImetro (Verizon Business). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 15%
- Local phone company 52%
- Internet / business phone carrier 30%
- Phone company 3%
Every prefix in Okld Trnid
Search the first six digits of a number in this list. If it's here, the number started in Okld Trnid with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 341-244 | T-Mobile (including Sprint) | Mobile carrier | 2024 |
| 341-267 | Onvoy | Internet / business phone carrier | 2026 |
| 341-299 | Fractel | Internet / business phone carrier | 2021 |
| 341-344 | Sonic Telecom | Phone company | 2021 |
| 341-666 | Fractel | Internet / business phone carrier | 2019 |
| 341-899 | Fractel | Internet / business phone carrier | 2021 |
| 510-297 | AT&T (local phone) | Local phone company | – |
| 510-343 | Tpx Communications | Internet / business phone carrier | – |
| 510-346 | AT&T (local phone) | Local phone company | – |
| 510-347 | AT&T (local phone) | Local phone company | – |
| 510-351 | AT&T (local phone) | Local phone company | – |
| 510-352 | AT&T (local phone) | Local phone company | – |
| 510-357 | AT&T (local phone) | Local phone company | – |
| 510-382 | AT&T (local phone) | Local phone company | – |
| 510-383 | AT&T (local phone) | Local phone company | – |
| 510-389 | Teleport Communications America | Internet / business phone carrier | 2023 |
| 510-394 | Teleport Communications America | Internet / business phone carrier | – |
| 510-425 | AT&T (local phone) | Local phone company | – |
| 510-430 | AT&T (local phone) | Local phone company | – |
| 510-454 | AT&T (local phone) | Local phone company | 2012 |
| 510-483 | AT&T (local phone) | Local phone company | – |
| 510-544 | Onvoy | Internet / business phone carrier | – |
| 510-553 | AT&T (local phone) | Local phone company | – |
| 510-560 | Comcast | Internet / business phone carrier | 2014 |
| 510-562 | AT&T (local phone) | Local phone company | – |
| 510-563 | AT&T (local phone) | Local phone company | – |
| 510-564 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 510-567 | AT&T (local phone) | Local phone company | – |
| 510-568 | AT&T (local phone) | Local phone company | – |
| 510-569 | AT&T (local phone) | Local phone company | – |
| 510-577 | AT&T (local phone) | Local phone company | – |
| 510-613 | AT&T (local phone) | Local phone company | – |
| 510-614 | AT&T (local phone) | Local phone company | – |
| 510-615 | AT&T (local phone) | Local phone company | – |
| 510-618 | AT&T (local phone) | Local phone company | – |
| 510-626 | Bandwidth | Internet / business phone carrier | 2016 |
| 510-632 | AT&T (local phone) | Local phone company | – |
| 510-633 | AT&T (local phone) | Local phone company | – |
| 510-635 | AT&T (local phone) | Local phone company | – |
| 510-636 | AT&T (local phone) | Local phone company | – |
| 510-638 | AT&T (local phone) | Local phone company | – |
| 510-639 | AT&T (local phone) | Local phone company | – |
| 510-667 | AT&T (local phone) | Local phone company | – |
| 510-678 | AT&T (local phone) | Local phone company | – |
| 510-686 | AT&T Enterprises | Phone company | – |
| 510-692 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 510-707 | T-Mobile (including Sprint) | Mobile carrier | 2016 |
| 510-729 | AT&T (local phone) | Local phone company | – |
| 510-746 | Tpx Communications | Internet / business phone carrier | 2001 |
| 510-753 | T-Mobile (including Sprint) | Mobile carrier | 2014 |
| 510-756 | T-Mobile (including Sprint) | Mobile carrier | 2015 |
| 510-777 | AT&T (local phone) | Local phone company | – |
| 510-798 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 510-820 | T-Mobile (including Sprint) | Mobile carrier | 2015 |
| 510-822 | T-Mobile (including Sprint) | Mobile carrier | 2016 |
| 510-850 | T-Mobile (including Sprint) | Mobile carrier | 2015 |
| 510-875 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 510-877 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 510-878 | Comcast | Internet / business phone carrier | – |
| 510-895 | AT&T (local phone) | Local phone company | – |
| 510-904 | Level 3 (Lumen) | Internet / business phone carrier | 2001 |
| 510-916 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 510-924 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 510-955 | MCImetro (Verizon Business) | Internet / business phone carrier | 2018 |
| 510-957 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 510-969 | Level 3 (Lumen) | Internet / business phone carrier | – |
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.