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: 597

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
631-597 A East Fire Island NY OCBHNYOBRS0  9104 VERIZON NEW YORK, INC. 132      
631-597 0 East Fire Island NY NYCMNYBXDSL  384C ONVOY, LLC- NY 132      
631-597 1 East Fire Island NY NYCMNYBX3MD  473G TELENGY L.L.C. - NY 132      
631-597 2 East Fire Island NY NYCMNYBXDSL  384C ONVOY, LLC- NY 132      
631-597 3 East Fire Island NY NYCMNYBXJMD  073H TELNYX LLC 132      
631-597 5 East Fire Island NY   145J TERRA NOVA TELECOM INC. 132      
631-597 6 East Fire Island NY OCBHNYOBRS0  9104 VERIZON NEW YORK, INC. 132      
631-597 7 East Fire Island NY OCBHNYOBRS0  9104 VERIZON NEW YORK, INC. 132      
631-597 8 East Fire Island NY NYCMNYBXDSL  384C ONVOY, LLC- NY 132      
631-597 9 East Fire Island NY OCBHNYOBRS0  9104 VERIZON NEW YORK, INC. 132      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.