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: 840

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
937-840 A Hillsboro OH HLBOOH3939A  9321 OHIO BELL TEL CO 328      
937-840 0 Hillsboro OH HLBOOH3939A  9321 OHIO BELL TEL CO 328      
937-840 1 Hillsboro OH HLBOOH3939A  9321 OHIO BELL TEL CO 328      
937-840 2 Hillsboro OH HLBOOH3939A  9321 OHIO BELL TEL CO 328      
937-840 3 Hillsboro OH DYTNOH15OMD  7421 AT&T - LOCAL 328   2006-02-24   
937-840 4 Hillsboro OH DYTNOHIBX2X  508J CENTURYLINK COMMUNICATIONS LLC 328   2014-05-31   
937-840 5 Hillsboro OH HLBOOH3939A  9321 OHIO BELL TEL CO 328      
937-840 6 Hillsboro OH HLBOOH3939A  9321 OHIO BELL TEL CO 328      
937-840 7 Hillsboro OH DYTNOH22XXX  7836 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 328   2004-10-01   
937-840 8 Hillsboro OH DYTNOH22XTY  6664 SPRINT SPECTRUM, L.P. 328   2006-10-02   
937-840 9 Hillsboro OH HLBOOH3939A  9321 OHIO BELL TEL CO 328      

Last updated: Fri, 13 May 2022 22:16:13 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.