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: 578

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
631-578 A Yaphank NY SYOSNYGNCM1  6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132      
631-578 0 Yaphank NY SYOSNYGNCM1  6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132   2008-05-02   
631-578 1 Yaphank NY GRCYNYGCX0Y  3864 CTC COMMUNICATIONS CORP. - NY 132   2008-03-10   
631-578 2 Yaphank NY SYOSNYGNCM1  6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132   2008-05-02   
631-578 3 Yaphank NY SYOSNYGNCM1  6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132   2009-02-16   
631-578 4 Yaphank NY SYOSNYGNCM1  6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132   2007-11-08   
631-578 5 Yaphank NY SYOSNYGNCM1  6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132   2007-11-08   
631-578 6 Yaphank NY SYOSNYGNCM1  6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132   2007-11-08   
631-578 7 Yaphank NY SYOSNYGNCM1  6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132   2007-11-08   
631-578 8 Yaphank NY SYOSNYGNCM1  6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132   2007-06-10   
631-578 9 Yaphank NY SYOSNYGNCM1  6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132   2007-06-10   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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