Phone numbers in St. Marys, Ohio
St. Marys has 5 phone prefixes in area codes 419, 567.
Biggest holders: Tsc Communications, Frontier, Goldstar Communications. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 40%
- Local phone company 20%
- Phone company 40%
Every prefix in St. Marys
Search the first six digits of a number in this list. If it's here, the number started in St. Marys with the carrier shown. If it isn't, check the Ohio page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 419-300 | Tsc Communications | Phone company | 2001 |
| 419-394 | Frontier | Local phone company | – |
| 419-400 | Goldstar Communications | Phone company | 2002 |
| 419-778 | T-Mobile (including Sprint) | Mobile carrier | – |
| 567-286 | AT&T Mobility | Mobile carrier | 2005 |
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.