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: 328

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
740-328 A Newark OH NWRKOHXA34C  0665 WINDSTREAM OHIO, LLC 324      
740-328 0 Newark OH NWRKOHXA34C  0665 WINDSTREAM OHIO, LLC 324      
740-328 1 Newark OH NWRKOHXA34C  0665 WINDSTREAM OHIO, LLC 324      
740-328 2 Newark OH NWRKOHXA34C  0665 WINDSTREAM OHIO, LLC 324      
740-328 3 Newark OH NWRKOHXA34C  0665 WINDSTREAM OHIO, LLC 324      
740-328 4 Newark OH NWRKOHXA34C  0665 WINDSTREAM OHIO, LLC 324      
740-328 5 Newark OH HLRDOHEJGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 324      
740-328 6 Newark OH NWRKOHXA34C  0665 WINDSTREAM OHIO, LLC 324      
740-328 7 Newark OH CLMBOH1152Z  6025 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 324   2013-10-18   
740-328 8 Newark OH NWRKOHXA34C  0665 WINDSTREAM OHIO, LLC 324      
740-328 9 Newark OH CLMBOH1152Z  6025 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OH 324   2015-07-06   

Last updated: Fri, 10 Jul 2026 02:55:48 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.