Phone numbers in Delmar, Delaware
Delmar has 9 phone prefixes in area code 302.
Biggest holders: Onvoy, Windstream (PAETEC), MetroPCS (T-Mobile). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 22%
- Local phone company 11%
- Internet / business phone carrier 56%
- Phone company 11%
Every prefix in Delmar
Search the first six digits of a number in this list. If it's here, the number started in Delmar with the carrier shown. If it isn't, check the Delaware page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 302-209 | Onvoy | Internet / business phone carrier | – |
| 302-248 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 302-462 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 302-466 | Teleport Communications America | Internet / business phone carrier | – |
| 302-556 | Onvoy | Internet / business phone carrier | 2020 |
| 302-693 | T-Mobile (including Sprint) | Mobile carrier | 2025 |
| 302-780 | Coretel Delaware | Phone company | 2001 |
| 302-846 | Verizon (local phone) | Local phone company | – |
| 302-907 | Windstream (PAETEC) | Internet / business phone carrier | – |
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.