Phone numbers in Buffalo, Illinois
Buffalo has 4 phone prefixes in area codes 217, 447.
Biggest holders: Terra Nova Telecom, AT&T (local phone), Telnyx. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 25%
- Internet / business phone carrier 75%
Every prefix in Buffalo
Search the first six digits of a number in this list. If it's here, the number started in Buffalo with the carrier shown. If it isn't, check the Illinois page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 217-203 | Terra Nova Telecom | Internet / business phone carrier | – |
| 217-364 | AT&T (local phone) | Local phone company | – |
| 217-906 | Telnyx | Internet / business phone carrier | – |
| 447-837 | 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.