MADISON — NJ
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| VERIZON NEW JERSEY, INC. | 9206 | 14 |
| LEVEL 3 COMMUNICATIONS, LLC - NJ | 4804 | 3 |
| CABLEVISION LIGHTPATH, INC. - NJ | 4948 | 2 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | 2 |
| MONMOUTH TELEPHONE AND TELEGRAPH, INC. - NJ | 3639 | 1 |