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: 838

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
304-838 A Clarksburg WV WLSMWV01XDX  5562 METROPCS, INC. 256      
304-838 0 Clarksburg WV   6701 AERIAL COMMUNICATIONS, INC. 256      
304-838 1 Clarksburg WV   6701 AERIAL COMMUNICATIONS, INC. 256      
304-838 2 Clarksburg WV   6701 AERIAL COMMUNICATIONS, INC. 256      
304-838 3 Clarksburg WV   6701 AERIAL COMMUNICATIONS, INC. 256      
304-838 4 Clarksburg WV   5562 METROPCS, INC. 256      
304-838 5 Clarksburg WV   5562 METROPCS, INC. 256      
304-838 6 Clarksburg WV   5562 METROPCS, INC. 256      
304-838 7 Clarksburg WV   624H ONVOY SPECTRUM, LLC 256   2021-05-22   
304-838 8 Clarksburg WV   6394 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WV 256   2012-05-10   
304-838 9 Clarksburg WV   6701 AERIAL COMMUNICATIONS, INC. 256      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.