Phone numbers in Streator, Illinois
Streator has 10 phone prefixes in area codes 779, 815.
Biggest holders: Verizon Wireless, Frontier, AT&T Mobility. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 50%
- Local phone company 20%
- Internet / business phone carrier 30%
Every prefix in Streator
Search the first six digits of a number in this list. If it's here, the number started in Streator with the carrier shown. If it isn't, check the Illinois page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 779-237 | Verizon Wireless | Mobile carrier | 2018 |
| 779-364 | Nuso | Internet / business phone carrier | 2023 |
| 779-879 | Onvoy | Internet / business phone carrier | 2021 |
| 815-257 | Verizon Wireless | Mobile carrier | – |
| 815-510 | Mediacom Telephony Of Illinois | Internet / business phone carrier | 2010 |
| 815-672 | Frontier | Local phone company | – |
| 815-673 | Frontier | Local phone company | – |
| 815-674 | AT&T Mobility | Mobile carrier | – |
| 815-822 | AT&T Mobility | Mobile carrier | 2001 |
| 815-992 | T-Mobile (including Sprint) | Mobile carrier | 2005 |
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.