Phone numbers in Rising Sun, Maryland
Rising Sun has 3 phone prefixes in area codes 410, 667.
Biggest holders: Core Communications, Armstrong Tel. Co. Of Maryland, Boost / Virgin Mobile. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 33%
- Internet / business phone carrier 33%
- Phone company 33%
Every prefix in Rising Sun
Search the first six digits of a number in this list. If it's here, the number started in Rising Sun with the carrier shown. If it isn't, check the Maryland page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 410-214 | Core Communications | Internet / business phone carrier | 2009 |
| 410-658 | Armstrong Tel. Co. Of Maryland | Phone company | – |
| 667-535 | Boost / Virgin Mobile | Mobile carrier | 2025 |
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.