Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 304 [Rate centres in NPA 304] [Dial plan for NPA 304]

NXX: 582

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
304-582 A Martinsburg WV CMLDMDCM5MD  6284 UNITED STATES CELLULAR - WV 240      
304-582 0 Martinsburg WV   6284 UNITED STATES CELLULAR - WV 240      
304-582 1 Martinsburg WV   6284 UNITED STATES CELLULAR - WV 240      
304-582 2 Martinsburg WV   6284 UNITED STATES CELLULAR - WV 240      
304-582 3 Martinsburg WV   6284 UNITED STATES CELLULAR - WV 240      
304-582 4 Martinsburg WV   6284 UNITED STATES CELLULAR - WV 240      
304-582 5 Martinsburg WV   6284 UNITED STATES CELLULAR - WV 240      
304-582 6 Martinsburg WV   6284 UNITED STATES CELLULAR - WV 240      
304-582 7 Martinsburg WV   6284 UNITED STATES CELLULAR - WV 240      
304-582 8 Martinsburg WV   6284 UNITED STATES CELLULAR - WV 240      
304-582 9 Martinsburg WV   6284 UNITED STATES CELLULAR - WV 240      

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

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