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: 631 [Rate centres in NPA 631] [Dial plan for NPA 631]

NXX: 534

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
631-534 A Cold Spring Harbor NY GRCYNYDYDS0  7133 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 132      
631-534 0 Cold Spring Harbor NY GRCYNYDYDS0  7133 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 132      
631-534 1 Cold Spring Harbor NY NYCMNYZR32Z  490J DISH WIRELESS, LLC 132   2024-01-16   
631-534 2 Cold Spring Harbor NY   1215 CORETEL NEW YORK, INC. - NY 132   2019-05-22   
631-534 3 Cold Spring Harbor NY NYCMNYZR32Z  490J DISH WIRELESS, LLC 132   2023-09-22   
631-534 4 Cold Spring Harbor NY GRCYNYDYDS0  7133 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 132      
631-534 7 Cold Spring Harbor NY NYCMNYZRDBS  155E PEERLESS NETWORK OF NEW YORK, LLC - NY 132   2010-08-02   
631-534 9 Cold Spring Harbor NY GRCYNYDYDS0  7133 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 132      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.