Phone numbers in Westfield, Massachusetts
Westfield has 16 phone prefixes in area code 413.
Biggest holders: Windstream (PAETEC), Verizon (local phone), Stratus Networks. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 6%
- Local phone company 25%
- Internet / business phone carrier 50%
- Phone company 19%
Every prefix in Westfield
Search the first six digits of a number in this list. If it's here, the number started in Westfield with the carrier shown. If it isn't, check the Massachusetts page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 413-393 | Stratus Networks | Phone company | 2021 |
| 413-454 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 413-480 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 413-485 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 413-516 | Leap Telecom | Phone company | 2023 |
| 413-562 | Verizon (local phone) | Local phone company | – |
| 413-564 | Verizon (local phone) | Local phone company | – |
| 413-568 | Verizon (local phone) | Local phone company | – |
| 413-571 | Windstream (PAETEC) | Internet / business phone carrier | 2018 |
| 413-572 | Verizon (local phone) | Local phone company | – |
| 413-579 | Tc Systems | Phone company | – |
| 413-639 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 413-642 | Windstream (PAETEC) | Internet / business phone carrier | 2001 |
| 413-729 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 413-875 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 413-977 | MetroPCS (T-Mobile) | Mobile carrier | – |
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.