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: 551

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
631-551 A St James NY GRCYNYDYDS0  7133 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 132      
631-551 0 St James NY GRCYNYDYDS0  7133 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 132      
631-551 1 St James NY NYCMNYBXDSL  384C ONVOY, LLC- NY 132   2013-01-27   
631-551 2 St James NY NYCMNY37TMD  624H ONVOY SPECTRUM, LLC 132   2022-04-04   
631-551 3 St James NY NYCMNYBXDSL  384C ONVOY, LLC- NY 132   2012-03-29   
631-551 4 St James NY GRCYNYDYDS0  7133 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 132      
631-551 5 St James NY GRCYNYDYDS0  7133 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 132   2003-06-09   
631-551 6 St James NY NYCMNY37XAX  506J TWILIO INTERNATIONAL, INC. 132   2020-10-25   
631-551 7 St James NY NYCMNYZRDBS  155E PEERLESS NETWORK OF NEW YORK, LLC - NY 132   2009-10-05   
631-551 8 St James NY NYCMNYBXDSL  384C ONVOY, LLC- NY 132   2022-09-29   
631-551 9 St James NY GRCYNYDYDS0  7133 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 132      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.