Phone numbers in Glen Ellyn, Illinois
Glen Ellyn has 17 phone prefixes in area codes 331, 630.
Biggest holders: AT&T (local phone), Onvoy, MCImetro (Verizon Business). This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 29%
- Internet / business phone carrier 71%
Every prefix in Glen Ellyn
Search the first six digits of a number in this list. If it's here, the number started in Glen Ellyn with the carrier shown. If it isn't, check the Illinois page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 331-323 | Onvoy | Internet / business phone carrier | 2024 |
| 331-466 | TON80 Communications | Internet / business phone carrier | 2022 |
| 331-946 | Fractel | Internet / business phone carrier | 2020 |
| 630-348 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 630-403 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 630-446 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 630-469 | AT&T (local phone) | Local phone company | – |
| 630-474 | Comcast | Internet / business phone carrier | – |
| 630-534 | Windstream (PAETEC) | Internet / business phone carrier | 2001 |
| 630-545 | AT&T (local phone) | Local phone company | – |
| 630-547 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 630-790 | AT&T (local phone) | Local phone company | – |
| 630-793 | Onvoy | Internet / business phone carrier | – |
| 630-858 | AT&T (local phone) | Local phone company | – |
| 630-866 | Teleport Communications America | Internet / business phone carrier | – |
| 630-942 | AT&T (local phone) | Local phone company | – |
| 630-984 | Level 3 (Lumen) | 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.