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

NXX: 813

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
304-813 A Keyser WV CMLDMDCM5MD  6284 UNITED STATES CELLULAR - WV 240      
304-813 0 Keyser WV   6284 UNITED STATES CELLULAR - WV 240      
304-813 1 Keyser WV   6284 UNITED STATES CELLULAR - WV 240      
304-813 2 Keyser WV   6284 UNITED STATES CELLULAR - WV 240      
304-813 3 Keyser WV   6284 UNITED STATES CELLULAR - WV 240      
304-813 4 Keyser WV   6284 UNITED STATES CELLULAR - WV 240      
304-813 5 Keyser WV   6284 UNITED STATES CELLULAR - WV 240      
304-813 6 Keyser WV   6284 UNITED STATES CELLULAR - WV 240      
304-813 7 Keyser WV   6284 UNITED STATES CELLULAR - WV 240      
304-813 8 Keyser WV   6284 UNITED STATES CELLULAR - WV 240      
304-813 9 Keyser WV   6284 UNITED STATES CELLULAR - WV 240      

Last updated: Sat, 02 May 2026 12:20:53 UTC

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