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: 737

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
937-737 A Arcanum OH   793K TWC IP ENABLED SERVICES, LLC 328      
937-737 0 Arcanum OH   793K TWC IP ENABLED SERVICES, LLC 328      
937-737 3 Arcanum OH   145J TERRA NOVA TELECOM INC. 328   2025-09-19   
937-737 7 Arcanum OH DYTNOHKT0MD  516J TON80 COMMUNICATIONS, LLC 328   2021-06-13   

Last updated: Mon, 15 Sep 2025 02:24:40 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.