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: 331

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
937-331 A Dayton OH DYTNOH2222J  9321 OHIO BELL TEL CO 328      
937-331 0 Dayton OH DYTNOH2222J  9321 OHIO BELL TEL CO 328      
937-331 1 Dayton OH DYTNOH2222J  9321 OHIO BELL TEL CO 328      
937-331 2 Dayton OH DYTNOH2222J  9321 OHIO BELL TEL CO 328      
937-331 3 Dayton OH DYTNOH2222J  9321 OHIO BELL TEL CO 328      
937-331 4 Dayton OH DYTNOH2222J  9321 OHIO BELL TEL CO 328      
937-331 5 Dayton OH DYTNOH2222J  9321 OHIO BELL TEL CO 328      
937-331 6 Dayton OH DYTNOH2222J  9321 OHIO BELL TEL CO 328      
937-331 7 Dayton OH   145J TERRA NOVA TELECOM INC. 328   2022-01-05   
937-331 8 Dayton OH DYTNOH15WMD  516C AT&T CORP. 328   2010-01-18   
937-331 9 Dayton OH DYTNOH2222J  9321 OHIO BELL TEL CO 328      

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.