Phone numbers in Marietta, Pennsylvania
Marietta has 4 phone prefixes in area codes 223, 717.
Biggest holders: MetroPCS (T-Mobile), Onvoy, Brightspeed Of Pennsylvania. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 25%
- Local phone company 25%
- Internet / business phone carrier 50%
Every prefix in Marietta
Search the first six digits of a number in this list. If it's here, the number started in Marietta with the carrier shown. If it isn't, check the Pennsylvania page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 223-242 | MetroPCS (T-Mobile) | Mobile carrier | 2019 |
| 223-319 | Onvoy | Internet / business phone carrier | 2023 |
| 717-426 | Brightspeed Of Pennsylvania | Local phone company | – |
| 717-604 | Comcast | Internet / business phone carrier | 2006 |
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.