Phone numbers in Olmsted Falls, Ohio
Olmsted Falls has 10 phone prefixes in area code 440.
Biggest holders: AT&T (local phone), Level 3 (Lumen), Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 10%
- Local phone company 20%
- Internet / business phone carrier 70%
Every prefix in Olmsted Falls
Search the first six digits of a number in this list. If it's here, the number started in Olmsted Falls with the carrier shown. If it isn't, check the Ohio page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 440-235 | AT&T (local phone) | Local phone company | – |
| 440-377 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 440-427 | AT&T (local phone) | Local phone company | – |
| 440-454 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 440-496 | Onvoy | Internet / business phone carrier | 2016 |
| 440-508 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 440-756 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 440-782 | Teleport Communications America | Internet / business phone carrier | – |
| 440-793 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 440-819 | Onvoy | Internet / business phone carrier | 2022 |
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.