Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 551 [Rate centres in NPA 551] [Dial plan for NPA 551]

NXX: 946

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
551-946 A Hackensack NJ JRCYNJ65BMD  965H FRACTEL, LLC 224      
551-946 0 Hackensack NJ WAYNNJAWCMS  6623 OMNIPOINT COMMUNICATIONS, INC. - NJ 224   2021-02-05   
551-946 1 Hackensack NJ NBWKNJ17QMD  6391 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 224   2021-01-18   
551-946 2 Hackensack NJ HCKNNJHKX4X  624H ONVOY SPECTRUM, LLC 224   2021-05-06   
551-946 3 Hackensack NJ JRCYNJ65BMD  965H FRACTEL, LLC 224   2020-12-14   
551-946 4 Hackensack NJ HCKNNJHKX4X  624H ONVOY SPECTRUM, LLC 224   2022-04-17   
551-946 5 Hackensack NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2021-02-18   
551-946 6 Hackensack NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2021-02-18   
551-946 7 Hackensack NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2021-02-18   
551-946 8 Hackensack NJ NWRKNJ0293Z  073H TELNYX LLC 224   2021-11-11   
551-946 9 Hackensack NJ NWRKNJ0293Z  073H TELNYX LLC 224   2021-11-11   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.