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: 304 [Rate centres in NPA 304] [Dial plan for NPA 304]

NXX: 933

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
304-933 A Bridgeport WV CLBGWVMAJMD  9944 LEVEL 3 COMMUNICATIONS, LLC - WV 256      
304-933 0 Bridgeport WV   5833 CORETEL WEST VIRGINIA, INC. - WV 256   2013-08-09   
304-933 1 Bridgeport WV   9944 LEVEL 3 COMMUNICATIONS, LLC - WV 256   2005-02-06   
304-933 2 Bridgeport WV   080F BANDWIDTH.COM CLEC, LLC - WV 256   2014-10-11   
304-933 3 Bridgeport WV   793K TWC IP ENABLED SERVICES, LLC 256   2007-02-27   
304-933 4 Bridgeport WV   9944 LEVEL 3 COMMUNICATIONS, LLC - WV 256      
304-933 5 Bridgeport WV   9944 LEVEL 3 COMMUNICATIONS, LLC - WV 256   2012-07-29   
304-933 6 Bridgeport WV   9944 LEVEL 3 COMMUNICATIONS, LLC - WV 256   2006-07-23   
304-933 7 Bridgeport WV   145J TERRA NOVA TELECOM INC. 256   2026-01-03   
304-933 8 Bridgeport WV   7849 LUMOS NETWORKS INC. - VA 256   2010-04-24   
304-933 9 Bridgeport WV   080F BANDWIDTH.COM CLEC, LLC - WV 256   2008-11-23   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.