Phone numbers in Livingston, California
Livingston has 4 phone prefixes in area code 209.
Biggest holders: Global Valley Networks, AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 50%
- Phone company 50%
Every prefix in Livingston
Search the first six digits of a number in this list. If it's here, the number started in Livingston with the carrier shown. If it isn't, check the California page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 209-394 | Global Valley Networks | Phone company | – |
| 209-398 | Global Valley Networks | Phone company | – |
| 209-449 | AT&T Mobility | Mobile carrier | 2018 |
| 209-991 | AT&T Mobility | Mobile 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.