Phone numbers in London, Ohio
London has 12 phone prefixes in area codes 220, 740.
Biggest holders: AT&T Mobility, Windstream (PAETEC), AT&T (local phone). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 42%
- Local phone company 17%
- Internet / business phone carrier 33%
- Phone company 8%
Every prefix in London
Search the first six digits of a number in this list. If it's here, the number started in London with the carrier shown. If it isn't, check the Ohio page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 220-263 | T-Mobile (including Sprint) | Mobile carrier | 2024 |
| 220-285 | AT&T Mobility | Mobile carrier | 2025 |
| 740-206 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 740-490 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 740-506 | Verizon Wireless | Mobile carrier | – |
| 740-604 | AT&T Mobility | Mobile carrier | – |
| 740-837 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 740-845 | AT&T (local phone) | Local phone company | – |
| 740-852 | AT&T (local phone) | Local phone company | – |
| 740-908 | Bandwidth | Internet / business phone carrier | – |
| 740-910 | First Communications | Phone company | 2002 |
| 740-956 | Windstream (PAETEC) | Internet / business phone carrier | 2002 |
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.