Phone numbers in Leonardtown, Maryland
Leonardtown has 28 phone prefixes in area codes 227, 240, 301.
Biggest holders: Verizon Wireless, Verizon (local phone), Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 54%
- Local phone company 14%
- Internet / business phone carrier 32%
Every prefix in Leonardtown
Search the first six digits of a number in this list. If it's here, the number started in Leonardtown with the carrier shown. If it isn't, check the Maryland page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 227-234 | Onvoy | Internet / business phone carrier | 2024 |
| 227-306 | Verizon Wireless | Mobile carrier | 2026 |
| 240-239 | Core Communications | Internet / business phone carrier | – |
| 240-256 | Teleport Communications America | Internet / business phone carrier | – |
| 240-298 | Verizon Wireless | Mobile carrier | – |
| 240-309 | Verizon Wireless | Mobile carrier | 2012 |
| 240-434 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 240-496 | Verizon Wireless | Mobile carrier | 2016 |
| 240-526 | Peerless Network Of Maryland | Internet / business phone carrier | – |
| 240-538 | MCImetro (Verizon Business) | Internet / business phone carrier | 2001 |
| 240-561 | Verizon Wireless | Mobile carrier | 2008 |
| 240-572 | Verizon Wireless | Mobile carrier | 2017 |
| 240-577 | Verizon Wireless | Mobile carrier | 2006 |
| 240-587 | Verizon Wireless | Mobile carrier | 2009 |
| 240-717 | Onvoy | Internet / business phone carrier | 2021 |
| 240-808 | Verizon Wireless | Mobile carrier | 2015 |
| 240-925 | Verizon Wireless | Mobile carrier | 2001 |
| 240-948 | Bandwidth | Internet / business phone carrier | 2022 |
| 240-980 | Verizon Wireless | Mobile carrier | 2023 |
| 301-247 | AT&T Mobility | Mobile carrier | – |
| 301-373 | Verizon (local phone) | Local phone company | – |
| 301-475 | Verizon (local phone) | Local phone company | – |
| 301-481 | Verizon Wireless | Mobile carrier | – |
| 301-536 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 301-690 | Idt America | Internet / business phone carrier | 2007 |
| 301-769 | Verizon (local phone) | Local phone company | – |
| 301-904 | Verizon Wireless | Mobile carrier | – |
| 301-997 | 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.