Phone numbers in Geneva, Illinois
Geneva has 23 phone prefixes in area codes 331, 630.
Biggest holders: AT&T (local phone), Fractel, Level 3 (Lumen). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 9%
- Local phone company 22%
- Internet / business phone carrier 61%
- Phone company 9%
Every prefix in Geneva
Search the first six digits of a number in this list. If it's here, the number started in Geneva with the carrier shown. If it isn't, check the Illinois page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 331-248 | Comcast | Internet / business phone carrier | 2007 |
| 331-265 | Onvoy | Internet / business phone carrier | – |
| 331-283 | T-Mobile (including Sprint) | Mobile carrier | 2022 |
| 331-500 | Fractel | Internet / business phone carrier | 2021 |
| 331-732 | Fractel | Internet / business phone carrier | 2019 |
| 331-788 | Fractel | Internet / business phone carrier | 2021 |
| 331-825 | Digital Network Access Communications | Phone company | – |
| 630-208 | AT&T (local phone) | Local phone company | – |
| 630-232 | AT&T (local phone) | Local phone company | – |
| 630-262 | AT&T (local phone) | Local phone company | – |
| 630-313 | Rcn Telecom Services Of Illinios | Phone company | – |
| 630-345 | AT&T (local phone) | Local phone company | – |
| 630-397 | Windstream (PAETEC) | Internet / business phone carrier | 2001 |
| 630-402 | Comcast | Internet / business phone carrier | – |
| 630-457 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 630-463 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 630-492 | Teleport Communications America | Internet / business phone carrier | – |
| 630-578 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 630-677 | T-Mobile (including Sprint) | Mobile carrier | – |
| 630-845 | AT&T (local phone) | Local phone company | – |
| 630-938 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 630-943 | Teleport Communications America | Internet / business phone carrier | – |
| 630-998 | MCImetro (Verizon Business) | 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.