Phone numbers in Old Saybrook Center, Connecticut
Old Saybrook Center has 17 phone prefixes in area codes 860, 959.
Biggest holders: AT&T (local phone), Verizon Wireless, AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 41%
- Local phone company 29%
- Internet / business phone carrier 29%
Every prefix in Old Saybrook Center
Search the first six digits of a number in this list. If it's here, the number started in Old Saybrook Center with the carrier shown. If it isn't, check the Connecticut page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 860-227 | Verizon Wireless | Mobile carrier | – |
| 860-304 | AT&T Mobility | Mobile carrier | – |
| 860-339 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 860-388 | AT&T (local phone) | Local phone company | – |
| 860-391 | AT&T (local phone) | Local phone company | – |
| 860-395 | AT&T (local phone) | Local phone company | – |
| 860-399 | AT&T (local phone) | Local phone company | – |
| 860-510 | AT&T (local phone) | Local phone company | – |
| 860-575 | Verizon Wireless | Mobile carrier | – |
| 860-577 | Teleport Communications America | Internet / business phone carrier | – |
| 860-661 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 860-853 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 860-876 | AT&T Mobility | Mobile carrier | – |
| 860-943 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 860-964 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 959-239 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 959-746 | TON80 Communications | Internet / business phone carrier | 2022 |
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.