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: 278

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
551-278 A Oradell NJ NWRKNJ0293Z  073H TELNYX LLC 224      
551-278 0 Oradell NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2019-04-24   
551-278 1 Oradell NJ NWRKNJ0293Z  073H TELNYX LLC 224   2017-01-26   
551-278 2 Oradell NJ   482F CORETEL NEW JERSEY, INC. - NJ 224   2019-04-02   
551-278 3 Oradell NJ   482F CORETEL NEW JERSEY, INC. - NJ 224   2019-05-29   
551-278 4 Oradell NJ   482F CORETEL NEW JERSEY, INC. - NJ 224   2019-05-29   
551-278 5 Oradell NJ NWRKNJ0248Z  118F BANDWIDTH.COM CLEC, LLC - NJ 224   2019-06-16   
551-278 6 Oradell NJ   482F CORETEL NEW JERSEY, INC. - NJ 224   2019-05-29   
551-278 7 Oradell NJ   482F CORETEL NEW JERSEY, INC. - NJ 224   2019-05-29   
551-278 8 Oradell NJ NWRKNJMDDSK  637C ONVOY, LLC - NJ 224   2019-04-24   
551-278 9 Oradell NJ NWRKNJMDDSM  264F PEERLESS NETWORK OF NEW JERSEY, LLC - NJ 224   2020-04-27   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.