Phone numbers in East St. Louis, Illinois
East St. Louis has 16 phone prefixes in area codes 618, 730.
Biggest holders: AT&T (local phone), Windstream (PAETEC), MetroPCS (T-Mobile). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 19%
- Local phone company 62%
- Internet / business phone carrier 19%
Every prefix in East St. Louis
Search the first six digits of a number in this list. If it's here, the number started in East St. Louis with the carrier shown. If it isn't, check the Illinois page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 618-215 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 618-261 | AT&T (local phone) | Local phone company | – |
| 618-271 | AT&T (local phone) | Local phone company | – |
| 618-274 | AT&T (local phone) | Local phone company | – |
| 618-332 | AT&T (local phone) | Local phone company | – |
| 618-337 | AT&T (local phone) | Local phone company | – |
| 618-482 | AT&T (local phone) | Local phone company | – |
| 618-515 | MetroPCS (T-Mobile) | Mobile carrier | 2014 |
| 618-583 | AT&T (local phone) | Local phone company | – |
| 618-646 | AT&T (local phone) | Local phone company | – |
| 618-815 | Boost / Virgin Mobile | Mobile carrier | 2021 |
| 618-857 | Charter / Spectrum | Internet / business phone carrier | 2006 |
| 618-874 | AT&T (local phone) | Local phone company | – |
| 618-875 | AT&T (local phone) | Local phone company | – |
| 730-231 | T-Mobile (including Sprint) | Mobile carrier | 2024 |
| 730-292 | Onvoy | Internet / business phone carrier | 2026 |
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.