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: 937 [Rate centres in NPA 937] [Dial plan for NPA 937]

NXX: 724

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
937-724 A Spring Valley OH DYTNOHKT2MD  073H TELNYX LLC 328      
937-724 0 Spring Valley OH DYTNOHKT2MD  073H TELNYX LLC 328   2017-04-24   
937-724 1 Spring Valley OH DYTNOH22X2Z  309B CINCINNATI BELL EXTENDED TERRITORIES LLC - OH 328   2023-08-12   
937-724 3 Spring Valley OH DYTNOHKT0MD  516J TON80 COMMUNICATIONS, LLC 328   2021-06-19   
937-724 4 Spring Valley OH DYTNOH22XGY  464C ONVOY, LLC - OH 328   2021-06-26   
937-724 7 Spring Valley OH DYTNOH22XGY  464C ONVOY, LLC - OH 328   2021-08-23   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.