Area code 959: where it is and who calls from it
Area code 959 is in Connecticut.
Northern and eastern Connecticut (Hartford, Bristol, Norwich, and northern and eastern Connecticut)
| Where | Connecticut |
|---|---|
| Time zone | Eastern Time ยท local time |
| In service since | 2014 |
| Overlay | Yes, with 860 |
| Prefixes assigned | 163 of 792 possible (21%) |
Overlay: 959 covers the same area as 860. Overlay areas use 10-digit dialing, so a seven-digit number alone won't connect, and neighbors can have different area codes.
Where 959 numbers started
Every prefix is assigned to a rate center, the local calling area it was set up in. These are the biggest in 959, with how many prefixes each has.
Who holds 959 numbers
- Mobile carrier 21%
- Local phone company 1%
- Internet / business phone carrier 74%
- Phone company 4%
| Carrier | Type | Prefixes | Share |
|---|---|---|---|
| Onvoy | Internet / business phone carrier | 55 | 34% |
| TON80 Communications | Internet / business phone carrier | 27 | 17% |
| Verizon Wireless | Mobile carrier | 14 | 9% |
| T-Mobile (including Sprint) | Mobile carrier | 14 | 9% |
| Fractel | Internet / business phone carrier | 8 | 5% |
| Teleport Communications America | Internet / business phone carrier | 6 | 4% |
| Bandwidth | Internet / business phone carrier | 5 | 3% |
| AT&T Mobility | Mobile carrier | 3 | 2% |
| Peerless Network Of Connecticut | Internet / business phone carrier | 2 | 1% |
| Windstream (PAETEC) | Internet / business phone carrier | 2 | 1% |
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: Connecticut.
Other area codes in Connecticut
Got a call from 959?
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 959 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.