Phone numbers in Dover, Delaware
Dover has 49 phone prefixes in area code 302.
Biggest holders: Verizon (local phone), T-Mobile (including Sprint), Level 3 (Lumen). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 33%
- Local phone company 29%
- Internet / business phone carrier 33%
- Phone company 6%
Every prefix in Dover
Search the first six digits of a number in this list. If it's here, the number started in Dover with the carrier shown. If it isn't, check the Delaware page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 302-213 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 302-237 | Commio | Internet / business phone carrier | 2024 |
| 302-241 | T-Mobile (including Sprint) | Mobile carrier | – |
| 302-244 | Onvoy | Internet / business phone carrier | 2015 |
| 302-257 | Peerless Network Of Delaware | Internet / business phone carrier | 2011 |
| 302-263 | Allpage | Phone company | – |
| 302-264 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 302-269 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 302-310 | Verizon (local phone) | Local phone company | 2014 |
| 302-336 | Bandwidth | Internet / business phone carrier | – |
| 302-342 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 302-346 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 302-350 | Redi-call Communications | Phone company | – |
| 302-359 | AT&T Mobility | Mobile carrier | – |
| 302-363 | T-Mobile (including Sprint) | Mobile carrier | – |
| 302-399 | T-Mobile (including Sprint) | Mobile carrier | – |
| 302-401 | Level 3 (Lumen) | Internet / business phone carrier | 2012 |
| 302-423 | AT&T Mobility | Mobile carrier | – |
| 302-450 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 302-465 | T-Mobile (including Sprint) | Mobile carrier | – |
| 302-480 | T-Mobile (including Sprint) | Mobile carrier | 2011 |
| 302-487 | T-Mobile (including Sprint) | Mobile carrier | 2019 |
| 302-526 | Level 3 (Lumen) | Internet / business phone carrier | 2001 |
| 302-546 | T-Mobile (including Sprint) | Mobile carrier | 2019 |
| 302-580 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 302-590 | Boost / Virgin Mobile | Mobile carrier | 2021 |
| 302-608 | Bandwidth | Internet / business phone carrier | 2016 |
| 302-666 | T-Mobile (including Sprint) | Mobile carrier | – |
| 302-670 | AT&T Mobility | Mobile carrier | – |
| 302-672 | Verizon (local phone) | Local phone company | – |
| 302-674 | Verizon (local phone) | Local phone company | – |
| 302-677 | Verizon (local phone) | Local phone company | – |
| 302-678 | Verizon (local phone) | Local phone company | – |
| 302-687 | T-Mobile (including Sprint) | Mobile carrier | 2025 |
| 302-710 | Bandwidth | Internet / business phone carrier | 2026 |
| 302-719 | T-Mobile (including Sprint) | Mobile carrier | 2025 |
| 302-724 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 302-730 | Verizon (local phone) | Local phone company | – |
| 302-734 | Verizon (local phone) | Local phone company | – |
| 302-735 | Verizon (local phone) | Local phone company | – |
| 302-736 | Verizon (local phone) | Local phone company | – |
| 302-739 | Verizon (local phone) | Local phone company | – |
| 302-741 | Verizon (local phone) | Local phone company | – |
| 302-744 | Verizon (local phone) | Local phone company | – |
| 302-747 | Teleport Communications America | Internet / business phone carrier | – |
| 302-760 | Verizon (local phone) | Local phone company | – |
| 302-782 | Coretel Delaware | Phone company | 2001 |
| 302-857 | Verizon (local phone) | Local phone company | – |
| 302-883 | 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.