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: 557

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
551-557 A Park Ridge NJ PSWYNJBXDS0  999H BLUEBIRD COMMUNICATIONS, LLC - NJ 224      
551-557 0 Park Ridge NJ JRCYNJ65DS4  264F PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 224   2020-03-20   
551-557 1 Park Ridge NJ   999H BLUEBIRD COMMUNICATIONS, LLC - NJ 224   2018-11-02   
551-557 2 Park Ridge NJ JRCYNJ658MD  197D VONAGE AMERICA LLC 224   2020-07-17   
551-557 3 Park Ridge NJ JRCYNJ658MD  197D VONAGE AMERICA LLC 224   2020-07-17   
551-557 4 Park Ridge NJ   515J IP HORIZON LLC 224   2020-05-28   
551-557 5 Park Ridge NJ PRNYNJFP4MD  4948 CABLEVISION LIGHTPATH, INC. - NJ 224   2019-02-23   
551-557 6 Park Ridge NJ NBWKNJNBXLY  7142 TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 224   2020-03-16   
551-557 7 Park Ridge NJ   145J TERRA NOVA TELECOM INC. 224   2024-02-13   
551-557 8 Park Ridge NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2019-04-24   
551-557 9 Park Ridge NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2019-04-24   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.