Phone numbers in Coronado, California
Coronado has 26 phone prefixes in area codes 619, 858.
Biggest holders: T-Mobile (including Sprint), AT&T (local phone), Fractel. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 35%
- Local phone company 19%
- Internet / business phone carrier 46%
Every prefix in Coronado
Search the first six digits of a number in this list. If it's here, the number started in Coronado with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 619-215 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 619-313 | Teleport Communications America | Internet / business phone carrier | – |
| 619-319 | T-Mobile (including Sprint) | Mobile carrier | – |
| 619-347 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 619-365 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 619-435 | AT&T (local phone) | Local phone company | – |
| 619-437 | AT&T (local phone) | Local phone company | – |
| 619-459 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 619-519 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 619-522 | AT&T (local phone) | Local phone company | – |
| 619-537 | AT&T (local phone) | Local phone company | 2007 |
| 619-545 | AT&T (local phone) | Local phone company | – |
| 619-554 | Tpx Communications | Internet / business phone carrier | – |
| 619-568 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 619-675 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 619-762 | T-Mobile (including Sprint) | Mobile carrier | 2015 |
| 619-775 | Onvoy | Internet / business phone carrier | 2016 |
| 619-805 | T-Mobile (including Sprint) | Mobile carrier | – |
| 619-841 | Tpx Communications | Internet / business phone carrier | – |
| 619-865 | T-Mobile (including Sprint) | Mobile carrier | – |
| 619-878 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 619-996 | Onvoy | Internet / business phone carrier | – |
| 858-399 | Fractel | Internet / business phone carrier | 2021 |
| 858-422 | Fractel | Internet / business phone carrier | 2021 |
| 858-448 | AT&T Mobility | Mobile carrier | 2026 |
| 858-898 | Fractel | Internet / business phone carrier | 2022 |
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.