Phone numbers in Cumberland, Indiana
Cumberland has 11 phone prefixes in area codes 317, 463.
Biggest holders: Bandwidth, AT&T (local phone), Level 3 (Lumen). This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 18%
- Internet / business phone carrier 64%
- Phone company 18%
Every prefix in Cumberland
Search the first six digits of a number in this list. If it's here, the number started in Cumberland with the carrier shown. If it isn't, check the Indiana page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 317-434 | Level 3 (Lumen) | Internet / business phone carrier | 2011 |
| 317-622 | Teleport Communications America | Internet / business phone carrier | 2001 |
| 317-866 | Hancock Communications | Phone company | – |
| 317-891 | AT&T (local phone) | Local phone company | – |
| 317-894 | AT&T (local phone) | Local phone company | – |
| 317-934 | Bandwidth | Internet / business phone carrier | 2015 |
| 317-947 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 463-242 | Bandwidth | Internet / business phone carrier | 2020 |
| 463-259 | Bandwidth | Internet / business phone carrier | 2021 |
| 463-289 | Onvoy | Internet / business phone carrier | 2023 |
| 463-318 | FIVE9 | Phone company | 2024 |
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.