Phone numbers in Ansonidrby, Connecticut
Ansonidrby has 36 phone prefixes in area codes 203, 475.
Biggest holders: T-Mobile (including Sprint), AT&T (local phone), Verizon Wireless. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 61%
- Local phone company 17%
- Internet / business phone carrier 22%
Every prefix in Ansonidrby
Search the first six digits of a number in this list. If it's here, the number started in Ansonidrby with the carrier shown. If it isn't, check the Connecticut page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 203-231 | Verizon Wireless | Mobile carrier | – |
| 203-278 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 203-305 | AT&T Mobility | Mobile carrier | – |
| 203-308 | Verizon Wireless | Mobile carrier | 2008 |
| 203-343 | AT&T Mobility | Mobile carrier | 2012 |
| 203-446 | Teleport Communications America | Internet / business phone carrier | – |
| 203-516 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 203-732 | AT&T (local phone) | Local phone company | – |
| 203-734 | AT&T (local phone) | Local phone company | – |
| 203-735 | AT&T (local phone) | Local phone company | – |
| 203-736 | AT&T (local phone) | Local phone company | – |
| 203-751 | AT&T (local phone) | Local phone company | – |
| 203-892 | T-Mobile (including Sprint) | Mobile carrier | 2010 |
| 203-893 | Verizon Wireless | Mobile carrier | 2007 |
| 203-906 | Verizon Wireless | Mobile carrier | 2002 |
| 203-954 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 203-997 | T-Mobile (including Sprint) | Mobile carrier | 2011 |
| 475-216 | T-Mobile (including Sprint) | Mobile carrier | 2018 |
| 475-223 | T-Mobile (including Sprint) | Mobile carrier | 2014 |
| 475-228 | Verizon Wireless | Mobile carrier | 2016 |
| 475-243 | Peerless Network Of Connecticut | Internet / business phone carrier | 2013 |
| 475-251 | AT&T Mobility | Mobile carrier | 2018 |
| 475-280 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 475-281 | T-Mobile (including Sprint) | Mobile carrier | 2020 |
| 475-309 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 475-320 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 475-339 | T-Mobile (including Sprint) | Mobile carrier | 2022 |
| 475-342 | TON80 Communications | Internet / business phone carrier | 2022 |
| 475-366 | T-Mobile (including Sprint) | Mobile carrier | 2024 |
| 475-374 | T-Mobile (including Sprint) | Mobile carrier | 2024 |
| 475-394 | AT&T (local phone) | Local phone company | 2025 |
| 475-404 | Onvoy | Internet / business phone carrier | 2026 |
| 475-439 | AT&T Mobility | Mobile carrier | 2015 |
| 475-455 | Fractel | Internet / business phone carrier | 2020 |
| 475-731 | T-Mobile (including Sprint) | Mobile carrier | 2015 |
| 475-777 | Peerless Network Of Connecticut | Internet / business phone carrier | 2014 |
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.