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: 740 [Rate centres in NPA 740] [Dial plan for NPA 740]

NXX: 388

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
740-388 A Vinton OH VNTNOH38RS1  9321 OHIO BELL TEL CO 324      
740-388 0 Vinton OH VNTNOH38RS1  9321 OHIO BELL TEL CO 324      
740-388 1 Vinton OH CLMDOH448MD  073H TELNYX LLC 324      
740-388 2 Vinton OH CLMDOH449MD  939H COMMIO, LLC 324      
740-388 3 Vinton OH CLMBOHLT1MD  464C ONVOY, LLC - OH 324      
740-388 4 Vinton OH   793K TWC IP ENABLED SERVICES, LLC 324      
740-388 7 Vinton OH CLMDOH44MMD  516J TON80 COMMUNICATIONS, LLC 324      
740-388 8 Vinton OH VNTNOH38RS1  9321 OHIO BELL TEL CO 324      
740-388 9 Vinton OH VNTNOH38RS1  9321 OHIO BELL TEL CO 324      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.