Area code 508: where it is and who calls from it
Area code 508 is in Massachusetts.
Southeastern Massachusetts
| Where | Massachusetts |
|---|---|
| Time zone | Eastern Time ยท local time |
| In service since | 1988 |
| Overlay | Yes, with 774 |
| Prefixes assigned | 749 of 792 possible (95%) |
Overlay: 508 covers the same area as 774. Overlay areas use 10-digit dialing, so a seven-digit number alone won't connect, and neighbors can have different area codes.
Where 508 numbers started
Every prefix is assigned to a rate center, the local calling area it was set up in. These are the biggest in 508, with how many prefixes each has.
Plus 34 smaller rate centers.
Who holds 508 numbers
- Mobile carrier 20%
- Local phone company 41%
- Internet / business phone carrier 29%
- Paging service 1%
- Phone company 9%
| Carrier | Type | Prefixes | Share |
|---|---|---|---|
| Verizon (local phone) | Local phone company | 306 | 41% |
| Windstream (PAETEC) | Internet / business phone carrier | 67 | 9% |
| AT&T Mobility | Mobile carrier | 63 | 8% |
| Level 3 (Lumen) | Internet / business phone carrier | 60 | 8% |
| MCImetro (Verizon Business) | Internet / business phone carrier | 47 | 6% |
| Verizon Wireless | Mobile carrier | 44 | 6% |
| Tc Systems | Phone company | 39 | 5% |
| T-Mobile (including Sprint) | Mobile carrier | 23 | 3% |
| Comcast | Internet / business phone carrier | 21 | 3% |
| Norfolk County Internet | Phone company | 18 | 2% |
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.
States served: Massachusetts.
Other area codes in Massachusetts
339 351 413 617 774 781 857 978
Got a call from 508?
An area code tells you where a number was first assigned, not where the caller is. People keep their numbers when they move, and scammers can fake any number. If you weren't expecting the call, let it go to voicemail.
If the call shows a 508 number that matches the first six digits of your own, that's often neighbor spoofing. Use the box above to check the full number.
Area code facts from the NANPA area code database (updated 10/06/2026); prefixes and carriers from NANPA's central office code records (updated 2026-10-10). Place description adapted from Wikipedia, CC BY-SA 4.0.