Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 631 [Rate centres in NPA 631] [Dial plan for NPA 631]

NXX: 406

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
631-406 A Smithtown NY NYCTNYHIGT0  7353 RCN TELECOM SERVICES, INC. - NY 132      
631-406 0 Smithtown NY   6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132   2021-11-14   
631-406 1 Smithtown NY   6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132   2021-11-14   
631-406 2 Smithtown NY   7140 TC SYSTEMS, INC. - NY 132   2002-08-21   
631-406 3 Smithtown NY   6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132   2008-05-08   
631-406 4 Smithtown NY   4006 LEVEL 3 COMMUNICATIONS, LLC - NY 132   2005-11-18   
631-406 5 Smithtown NY   4006 LEVEL 3 COMMUNICATIONS, LLC - NY 132   2005-11-18   
631-406 6 Smithtown NY   7126 CABLEVISION LIGHTPATH, INC. - NY 132   2007-10-31   
631-406 7 Smithtown NY   7126 CABLEVISION LIGHTPATH, INC. - NY 132   2007-10-12   
631-406 8 Smithtown NY   7353 RCN TELECOM SERVICES, INC. - NY 132      
631-406 9 Smithtown NY   997E BANDWIDTH.COM CLEC, LLC - NY 132   2010-06-23   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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