Phone numbers in Oak Park, Illinois
Oak Park has 20 phone prefixes in area code 708.
Biggest holders: AT&T (local phone), Level 3 (Lumen), MCImetro (Verizon Business). This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 40%
- Internet / business phone carrier 55%
- Phone company 5%
Every prefix in Oak Park
Search the first six digits of a number in this list. If it's here, the number started in Oak Park with the carrier shown. If it isn't, check the Illinois page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 708-358 | AT&T (local phone) | Local phone company | – |
| 708-383 | AT&T (local phone) | Local phone company | – |
| 708-386 | AT&T (local phone) | Local phone company | – |
| 708-406 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 708-434 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 708-445 | AT&T (local phone) | Local phone company | – |
| 708-524 | AT&T (local phone) | Local phone company | – |
| 708-613 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 708-622 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 708-628 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 708-660 | AT&T (local phone) | Local phone company | – |
| 708-665 | Level 3 (Lumen) | Internet / business phone carrier | 2006 |
| 708-666 | Clear Rate Communications | Phone company | 2011 |
| 708-725 | Windstream (PAETEC) | Internet / business phone carrier | 2001 |
| 708-763 | AT&T (local phone) | Local phone company | – |
| 708-848 | AT&T (local phone) | Local phone company | – |
| 708-851 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 708-919 | Onvoy | Internet / business phone carrier | – |
| 708-934 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 708-948 | Teleport Communications America | Internet / business phone carrier | – |
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.