Phone numbers in Milton, Massachusetts
Milton has 21 phone prefixes in area codes 617, 857.
Biggest holders: Verizon (local phone), AT&T Mobility, Level 3 (Lumen). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 24%
- Local phone company 24%
- Internet / business phone carrier 38%
- Phone company 14%
Every prefix in Milton
Search the first six digits of a number in this list. If it's here, the number started in Milton with the carrier shown. If it isn't, check the Massachusetts page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 617-273 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 617-291 | AT&T Mobility | Mobile carrier | – |
| 617-296 | Verizon (local phone) | Local phone company | – |
| 617-298 | Verizon (local phone) | Local phone company | – |
| 617-313 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 617-322 | Comcast | Internet / business phone carrier | – |
| 617-433 | Tc Systems | Phone company | – |
| 617-609 | AT&T Mobility | Mobile carrier | 2024 |
| 617-615 | Rcn Telecom Services | Phone company | – |
| 617-690 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 617-696 | Verizon (local phone) | Local phone company | – |
| 617-698 | Verizon (local phone) | Local phone company | – |
| 617-898 | Verizon (local phone) | Local phone company | – |
| 617-907 | Norfolk County Internet | Phone company | – |
| 617-915 | Onvoy | Internet / business phone carrier | – |
| 617-922 | AT&T Mobility | Mobile carrier | – |
| 617-980 | MetroPCS (T-Mobile) | Mobile carrier | 2002 |
| 857-267 | Comcast | Internet / business phone carrier | 2013 |
| 857-314 | Bandwidth | Internet / business phone carrier | 2015 |
| 857-419 | AT&T Mobility | Mobile carrier | 2016 |
| 857-598 | MCImetro (Verizon Business) | Internet / business phone carrier | 2001 |
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.