Phone numbers in LaSalle, Illinois
LaSalle has 13 phone prefixes in area codes 779, 815.
Biggest holders: AT&T (local phone), Verizon Wireless, Level 3 (Lumen). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 31%
- Local phone company 23%
- Internet / business phone carrier 46%
Every prefix in LaSalle
Search the first six digits of a number in this list. If it's here, the number started in LaSalle with the carrier shown. If it isn't, check the Illinois page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 779-201 | Verizon Wireless | Mobile carrier | 2012 |
| 779-381 | Verizon Wireless | Mobile carrier | 2023 |
| 779-601 | Bandwidth | Internet / business phone carrier | 2014 |
| 779-732 | Fractel | Internet / business phone carrier | 2021 |
| 815-200 | Windstream (PAETEC) | Internet / business phone carrier | 2006 |
| 815-220 | AT&T (local phone) | Local phone company | – |
| 815-223 | AT&T (local phone) | Local phone company | – |
| 815-224 | AT&T (local phone) | Local phone company | – |
| 815-250 | Comcast | Internet / business phone carrier | 2006 |
| 815-410 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 815-579 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 815-712 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 815-780 | Level 3 (Lumen) | Internet / business phone carrier | 2001 |
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.