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: 937

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
631-937 A Southold NY   612K CSC VOICE, LLC 132      
631-937 0 Southold NY NYCMNYBXJMD  073H TELNYX LLC 132   2018-11-07   
631-937 1 Southold NY NYCMNY37TMD  624H ONVOY SPECTRUM, LLC 132   2020-11-30   
631-937 2 Southold NY   1215 CORETEL NEW YORK, INC. - NY 132   2019-05-22   
631-937 3 Southold NY NYCMNYBXDSL  384C ONVOY, LLC- NY 132   2020-05-30   
631-937 4 Southold NY NYCMNYBXDSL  384C ONVOY, LLC- NY 132   2020-05-30   
631-937 5 Southold NY NYCMNYBXDSL  384C ONVOY, LLC- NY 132   2020-05-30   
631-937 6 Southold NY   1215 CORETEL NEW YORK, INC. - NY 132   2019-05-22   
631-937 7 Southold NY NYCMNYZRDBS  155E PEERLESS NETWORK OF NEW YORK, LLC - NY 132   2024-12-25   
631-937 8 Southold NY   612K CSC VOICE, LLC 132   2015-09-06   
631-937 9 Southold NY NYCMNYBXDSL  384C ONVOY, LLC- NY 132   2023-09-30   

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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