Phone numbers in Morro Bay, California
Morro Bay has 7 phone prefixes in area code 805.
Biggest holders: AT&T (local phone), Level 3 (Lumen), Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 43%
- Internet / business phone carrier 57%
Every prefix in Morro Bay
Search the first six digits of a number in this list. If it's here, the number started in Morro Bay with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 805-225 | AT&T (local phone) | Local phone company | – |
| 805-254 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 805-600 | Onvoy | Internet / business phone carrier | – |
| 805-771 | AT&T (local phone) | Local phone company | – |
| 805-772 | AT&T (local phone) | Local phone company | – |
| 805-776 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 805-831 | Onvoy | Internet / business phone carrier | 2023 |
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.