Phone numbers in Decatur, Illinois
Decatur has 49 phone prefixes in area codes 217, 447.
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 39%
- Local phone company 37%
- Internet / business phone carrier 24%
Every prefix in Decatur
Search the first six digits of a number in this list. If it's here, the number started in Decatur with the carrier shown. If it isn't, check the Illinois page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 217-201 | T-Mobile (including Sprint) | Mobile carrier | – |
| 217-233 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 217-329 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 217-330 | Verizon Wireless | Mobile carrier | – |
| 217-358 | AT&T Mobility | Mobile carrier | 2001 |
| 217-362 | AT&T (local phone) | Local phone company | – |
| 217-412 | AT&T Mobility | Mobile carrier | – |
| 217-413 | AT&T Mobility | Mobile carrier | – |
| 217-420 | AT&T (local phone) | Local phone company | – |
| 217-421 | AT&T (local phone) | Local phone company | – |
| 217-422 | AT&T (local phone) | Local phone company | – |
| 217-423 | AT&T (local phone) | Local phone company | – |
| 217-424 | AT&T (local phone) | Local phone company | – |
| 217-425 | AT&T (local phone) | Local phone company | – |
| 217-428 | AT&T (local phone) | Local phone company | – |
| 217-429 | AT&T (local phone) | Local phone company | – |
| 217-433 | Verizon Wireless | Mobile carrier | – |
| 217-450 | AT&T (local phone) | Local phone company | – |
| 217-451 | AT&T (local phone) | Local phone company | – |
| 217-454 | AT&T Mobility | Mobile carrier | – |
| 217-462 | AT&T (local phone) | Local phone company | – |
| 217-464 | AT&T (local phone) | Local phone company | – |
| 217-475 | AT&T (local phone) | Local phone company | – |
| 217-519 | T-Mobile (including Sprint) | Mobile carrier | – |
| 217-520 | T-Mobile (including Sprint) | Mobile carrier | – |
| 217-521 | Verizon Wireless | Mobile carrier | – |
| 217-542 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 217-615 | Level 3 (Lumen) | Internet / business phone carrier | 2001 |
| 217-619 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 217-620 | Verizon Wireless | Mobile carrier | – |
| 217-706 | AT&T Mobility | Mobile carrier | – |
| 217-775 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 217-791 | AT&T Mobility | Mobile carrier | – |
| 217-809 | Verizon Wireless | Mobile carrier | – |
| 217-848 | T-Mobile (including Sprint) | Mobile carrier | – |
| 217-853 | Verizon Wireless | Mobile carrier | – |
| 217-855 | Verizon Wireless | Mobile carrier | – |
| 217-859 | Teleport Communications America | Internet / business phone carrier | 2019 |
| 217-872 | AT&T (local phone) | Local phone company | – |
| 217-875 | AT&T (local phone) | Local phone company | – |
| 217-876 | AT&T (local phone) | Local phone company | – |
| 217-877 | AT&T (local phone) | Local phone company | – |
| 217-917 | Telnyx | Internet / business phone carrier | – |
| 217-972 | AT&T Mobility | Mobile carrier | – |
| 447-233 | TON80 Communications | Internet / business phone carrier | 2022 |
| 447-251 | Nuso | Internet / business phone carrier | 2023 |
| 447-287 | Teleport Communications America | Internet / business phone carrier | 2022 |
| 447-529 | Fractel | Internet / business phone carrier | 2021 |
| 447-876 | Teleport Communications America | Internet / business phone carrier | 2021 |
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.