NJ
United States geographic area code, in service since 1947-01-01. Part of the 201/551 overlay complex — ten-digit dialing required.
Created 609. Created 908. Created 973. Created 551. Overlaid with 551 .
Prefix-level assignment does not equal number-level exhaustion; thousands-block pooling extends capacity. First assignment on record 2001-01-22, most recent 2026-08-25.
Area codes serve rate-center geographies, not municipal boundaries. “NJ” identifies the jurisdiction, not an exact city footprint.
Top assignees
Ranked by assigned prefixes · initial assignee ≠ current carrier| Rank | Assignee | Prefixes | Share |
|---|---|---|---|
| 01 | VERIZON NEW JERSEY, INC. | 273 | 34.1% |
| 02 | NEW CINGULAR WIRELESS PCS, LLC - DC | 69 | 8.6% |
| 03 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 66 | 8.3% |
| 04 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ | 64 | 8% |
| 05 | OMNIPOINT COMMUNICATIONS, INC. - NJ | 52 | 6.5% |
| 06 | LEVEL 3 COMMUNICATIONS, LLC - NJ | 46 | 5.8% |
| 07 | TELEPORT COMMUNICATIONS AMERICA, LLC - NJ | 32 | 4% |
| 08 | PAETEC ITEL, LLC | 30 | 3.8% |
| 09 | METROPCS, INC. | 28 | 3.5% |
| 10 | ONVOY, LLC - NJ | 16 | 2% |
Important: these are initial assignees from NANPA CO-code records — the carrier a prefix was originally assigned to. Because of number portability, the current serving carrier of any individual number may differ.
Change history
Recorded events for this NPA- 2001-05-08 NPA 551 To Overlay NPA 201; NPA 862 To Overlay NPA 973; and NPA 848 To Overlay NPA 732 (New Jersey)
- 1947-01-01Area code 201 entered service.
Planning letters & orders
Primary documents| Date | Document | Subject |
|---|---|---|
| 2001-05-08 | PL-277 ↗ | NPA 551 To Overlay NPA 201; NPA 862 To Overlay NPA 973; and NPA 848 To Overlay NPA 732 (New Jersey) |