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: 510

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
631-510 A Midland NY GRCYNYDYDS0  7133 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 132      
631-510 0 Midland NY GRCYNYDYDS0  7133 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 132      
631-510 1 Midland NY GRCYNYDYDS0  7133 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 132      
631-510 2 Midland NY GRCYNYDYDS0  7133 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 132      
631-510 3 Midland NY NYCQNYPLAMD  4593 BROADVIEW NETWORKS, INC. - NY 132      
631-510 4 Midland NY NYCMNYBXDSL  384C ONVOY, LLC- NY 132      
631-510 5 Midland NY NYCMNYBXDSL  384C ONVOY, LLC- NY 132      
631-510 6 Midland NY NYCMNYZRYMD  508J CENTURYLINK COMMUNICATIONS, LLC 132      
631-510 7 Midland NY   7133 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 132      
631-510 8 Midland NY NYCMNYBXDSL  384C ONVOY, LLC- NY 132      
631-510 9 Midland NY GRCYNYDYDS0  7133 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 132      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.