Phone numbers in Blackwood, New Jersey
Blackwood has 20 phone prefixes in area code 856.
Biggest holders: Verizon (local phone), Windstream (PAETEC), Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 5%
- Local phone company 25%
- Internet / business phone carrier 70%
Every prefix in Blackwood
Search the first six digits of a number in this list. If it's here, the number started in Blackwood with the carrier shown. If it isn't, check the New Jersey page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 856-227 | Verizon (local phone) | Local phone company | – |
| 856-228 | Verizon (local phone) | Local phone company | – |
| 856-232 | Verizon (local phone) | Local phone company | – |
| 856-245 | Teleport Communications America | Internet / business phone carrier | – |
| 856-290 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 856-302 | Comcast | Internet / business phone carrier | – |
| 856-352 | Comcast | Internet / business phone carrier | 2011 |
| 856-373 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 856-374 | Verizon (local phone) | Local phone company | – |
| 856-401 | Verizon (local phone) | Local phone company | – |
| 856-463 | Nuso | Internet / business phone carrier | 2020 |
| 856-481 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 856-618 | Onvoy | Internet / business phone carrier | 2023 |
| 856-637 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 856-657 | Onvoy | Internet / business phone carrier | 2026 |
| 856-677 | Windstream (PAETEC) | Internet / business phone carrier | 2001 |
| 856-707 | Onvoy | Internet / business phone carrier | 2026 |
| 856-718 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 856-827 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 856-842 | MCImetro (Verizon Business) | 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.