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: 240

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
631-240 A Smithtown NY NYCMNY83DSZ  4006 LEVEL 3 COMMUNICATIONS, LLC - NY 132      
631-240 0 Smithtown NY NYCMNY83DSZ  4006 LEVEL 3 COMMUNICATIONS, LLC - NY 132   2005-01-03   
631-240 1 Smithtown NY GRCYNYGCX0Y  3864 CTC COMMUNICATIONS CORP. - NY 132   2005-03-10   
631-240 2 Smithtown NY GRCYNYDYDS0  7133 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY 132   2003-06-09   
631-240 3 Smithtown NY WHPLNYWPXOY  997E BANDWIDTH.COM CLEC, LLC - NY 132   2010-08-06   
631-240 4 Smithtown NY NYCMNY83DSZ  4006 LEVEL 3 COMMUNICATIONS, LLC - NY 132   2003-01-13   
631-240 5 Smithtown NY NYCMNYBXDSL  384C ONVOY, LLC- NY 132   2023-08-11   
631-240 6 Smithtown NY NYCMNY83DSZ  4006 LEVEL 3 COMMUNICATIONS, LLC - NY 132   2004-11-27   
631-240 7 Smithtown NY   145J TERRA NOVA TELECOM INC. 132   2021-10-31   
631-240 8 Smithtown NY BTHPNYGRDS0  7126 CABLEVISION LIGHTPATH, INC. - NY 132   2012-06-04   
631-240 9 Smithtown NY NYCMNY83DSZ  4006 LEVEL 3 COMMUNICATIONS, LLC - NY 132   2001-12-21   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.