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: 300

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
304-300 A Clarksburg WV WLSMWV01XOX  368E YMAX COMMUNICATIONS CORP. - WV 256      
304-300 0 Clarksburg WV WLSMWV01XOX  368E YMAX COMMUNICATIONS CORP. - WV 256   2008-09-20   
304-300 1 Clarksburg WV WLSMWV01XOX  368E YMAX COMMUNICATIONS CORP. - WV 256   2008-09-20   
304-300 2 Clarksburg WV WLSMWV01XOX  368E YMAX COMMUNICATIONS CORP. - WV 256   2008-09-20   
304-300 3 Clarksburg WV WLSMWV01XOX  368E YMAX COMMUNICATIONS CORP. - WV 256   2008-09-20   
304-300 4 Clarksburg WV WLSMWV01XOX  368E YMAX COMMUNICATIONS CORP. - WV 256   2008-09-20   
304-300 5 Clarksburg WV WLSMWV01XOX  368E YMAX COMMUNICATIONS CORP. - WV 256   2009-10-04   
304-300 6 Clarksburg WV WLSMWV01XOX  368E YMAX COMMUNICATIONS CORP. - WV 256   2009-10-04   
304-300 7 Clarksburg WV WLSMWV01XOX  368E YMAX COMMUNICATIONS CORP. - WV 256   2009-10-04   
304-300 8 Clarksburg WV WLSMWV01XOX  368E YMAX COMMUNICATIONS CORP. - WV 256   2009-10-04   
304-300 9 Clarksburg WV CLBGWVMAXHX  080F BANDWIDTH.COM CLEC, LLC - WV 256   2010-10-29   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.