Phone numbers in Annawan, Illinois
Annawan has 3 phone prefixes in area code 309.
Biggest holders: Henry County Tel, Mediacom Telephony Of Illinois. This is the local calling area (rate center) where those prefixes were first assigned.
- Internet / business phone carrier 33%
- Phone company 67%
Every prefix in Annawan
Search the first six digits of a number in this list. If it's here, the number started in Annawan with the carrier shown. If it isn't, check the Illinois page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 309-710 | Mediacom Telephony Of Illinois | Internet / business phone carrier | 2005 |
| 309-934 | Henry County Tel | Phone company | – |
| 309-935 | Henry County Tel | Phone company | – |
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.