Phone numbers in Tompkinsville, Maryland
Tompkinsville has 7 phone prefixes in area codes 240, 301.
Biggest holders: Peerless Network Of Maryland, Onvoy, Teleport Communications America. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 14%
- Internet / business phone carrier 86%
Every prefix in Tompkinsville
Search the first six digits of a number in this list. If it's here, the number started in Tompkinsville with the carrier shown. If it isn't, check the Maryland page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 240-233 | Teleport Communications America | Internet / business phone carrier | – |
| 240-332 | Peerless Network Of Maryland | Internet / business phone carrier | – |
| 240-503 | Peerless Network Of Maryland | Internet / business phone carrier | 2013 |
| 240-635 | Core Communications | Internet / business phone carrier | 2018 |
| 240-804 | Onvoy | Internet / business phone carrier | – |
| 240-884 | Onvoy | Internet / business phone carrier | 2021 |
| 301-259 | Verizon (local phone) | Local phone company | – |
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.