Phone numbers in Sausalito, California
Sausalito has 25 phone prefixes in area codes 415, 628.
Biggest holders: Bandwidth, AT&T (local phone), T-Mobile (including Sprint). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 16%
- Local phone company 16%
- Internet / business phone carrier 64%
- Phone company 4%
Every prefix in Sausalito
Search the first six digits of a number in this list. If it's here, the number started in Sausalito with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 415-272 | AT&T Mobility | Mobile carrier | – |
| 415-275 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 415-289 | AT&T (local phone) | Local phone company | – |
| 415-324 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 415-331 | AT&T (local phone) | Local phone company | – |
| 415-332 | AT&T (local phone) | Local phone company | – |
| 415-339 | AT&T (local phone) | Local phone company | – |
| 415-367 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 415-415 | Wide Voice | Phone company | 2025 |
| 415-465 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 415-480 | Onvoy | Internet / business phone carrier | – |
| 415-687 | Peerless Network Of California | Internet / business phone carrier | 2012 |
| 415-729 | Onvoy | Internet / business phone carrier | – |
| 415-754 | Bandwidth | Internet / business phone carrier | – |
| 415-855 | Bandwidth | Internet / business phone carrier | 2014 |
| 415-887 | Teleport Communications America | Internet / business phone carrier | – |
| 415-942 | Bandwidth | Internet / business phone carrier | 2014 |
| 415-944 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 628-237 | T-Mobile (including Sprint) | Mobile carrier | 2016 |
| 628-254 | Bandwidth | Internet / business phone carrier | 2016 |
| 628-261 | Terra Nova Telecom | Internet / business phone carrier | – |
| 628-279 | Bandwidth | Internet / business phone carrier | 2021 |
| 628-329 | T-Mobile (including Sprint) | Mobile carrier | 2025 |
| 628-465 | Fractel | Internet / business phone carrier | 2019 |
| 628-699 | 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.