Phone numbers in Dennis, Massachusetts
Dennis has 13 phone prefixes in area codes 508, 774.
Biggest holders: Verizon (local phone), Windstream (PAETEC), Verizon Wireless. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 31%
- Local phone company 31%
- Internet / business phone carrier 38%
Every prefix in Dennis
Search the first six digits of a number in this list. If it's here, the number started in Dennis with the carrier shown. If it isn't, check the Massachusetts page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 508-258 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 508-385 | Verizon (local phone) | Local phone company | – |
| 508-394 | Verizon (local phone) | Local phone company | – |
| 508-398 | Verizon (local phone) | Local phone company | – |
| 508-470 | Bandwidth | Internet / business phone carrier | – |
| 508-619 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 508-694 | Onvoy | Internet / business phone carrier | – |
| 508-760 | Verizon (local phone) | Local phone company | – |
| 774-212 | Verizon Wireless | Mobile carrier | 2002 |
| 774-268 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 774-352 | Windstream (PAETEC) | Internet / business phone carrier | 2001 |
| 774-546 | Verizon Wireless | Mobile carrier | 2023 |
| 774-733 | MetroPCS (T-Mobile) | Mobile carrier | 2021 |
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.