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: 568

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
631-568 A Amityville NY NYCMNY37UMD  321J HD CARRIER LLC 132      
631-568 0 Amityville NY   515J IP HORIZON LLC 132   2015-03-25   
631-568 1 Amityville NY   6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132   2014-09-13   
631-568 2 Amityville NY   6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132   2014-09-13   
631-568 3 Amityville NY   6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132   2014-10-04   
631-568 4 Amityville NY   6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132   2014-10-04   
631-568 5 Amityville NY   321J HD CARRIER LLC 132   2014-07-31   
631-568 6 Amityville NY   6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132   2014-10-04   
631-568 7 Amityville NY   6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132   2014-10-04   
631-568 8 Amityville NY   6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132   2014-09-25   
631-568 9 Amityville NY   6622 OMNIPOINT COMMUNICATIONS, INC. - NY 132   2014-09-25   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.