Phone numbers in Malibu, California
Malibu has 28 phone prefixes in area codes 310, 424.
Biggest holders: Onvoy, Frontier, T-Mobile (including Sprint). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 29%
- Local phone company 14%
- Internet / business phone carrier 57%
Every prefix in Malibu
Search the first six digits of a number in this list. If it's here, the number started in Malibu with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 310-317 | Frontier | Local phone company | – |
| 310-359 | T-Mobile (including Sprint) | Mobile carrier | – |
| 310-456 | Frontier | Local phone company | – |
| 310-457 | Frontier | Local phone company | – |
| 310-494 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 310-506 | Tpx Communications | Internet / business phone carrier | – |
| 310-579 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 310-589 | Frontier | Local phone company | – |
| 310-708 | Onvoy | Internet / business phone carrier | 2023 |
| 310-774 | T-Mobile (including Sprint) | Mobile carrier | – |
| 310-919 | Onvoy | Internet / business phone carrier | – |
| 310-924 | MetroPCS (T-Mobile) | Mobile carrier | 2001 |
| 424-234 | Verizon Wireless | Mobile carrier | 2007 |
| 424-235 | MetroPCS (T-Mobile) | Mobile carrier | 2007 |
| 424-346 | Bandwidth | Internet / business phone carrier | 2014 |
| 424-388 | MCImetro (Verizon Business) | Internet / business phone carrier | 2016 |
| 424-395 | T-Mobile (including Sprint) | Mobile carrier | 2015 |
| 424-422 | Bandwidth | Internet / business phone carrier | 2019 |
| 424-425 | Verizon Wireless | Mobile carrier | 2018 |
| 424-441 | Verizon Wireless | Mobile carrier | 2020 |
| 424-464 | Bandwidth | Internet / business phone carrier | 2022 |
| 424-493 | Teleport Communications America | Internet / business phone carrier | 2023 |
| 424-524 | Onvoy | Internet / business phone carrier | 2021 |
| 424-548 | Onvoy | Internet / business phone carrier | 2025 |
| 424-644 | Charter / Spectrum | Internet / business phone carrier | 2006 |
| 424-781 | Onvoy | Internet / business phone carrier | 2006 |
| 424-786 | Fractel | Internet / business phone carrier | 2020 |
| 424-799 | Fractel | 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.