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: 553

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
304-553 A Charleston Zone 1 WV HNTNWVDT0MD  9944 LEVEL 3 COMMUNICATIONS, LLC - WV 254      
304-553 0 Charleston Zone 1 WV HNTNWVDT0MD  9944 LEVEL 3 COMMUNICATIONS, LLC - WV 254      
304-553 1 Charleston Zone 1 WV CUDNWVAAG01  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 254      
304-553 2 Charleston Zone 1 WV CUDNWVAAG01  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 254      
304-553 3 Charleston Zone 1 WV CUDNWVAAG01  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 254      
304-553 4 Charleston Zone 1 WV CUDNWVAAG01  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 254      
304-553 5 Charleston Zone 1 WV CUDNWVAAG01  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 254      
304-553 6 Charleston Zone 1 WV CUDNWVAAG01  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 254      
304-553 7 Charleston Zone 1 WV HNTNWVDT0MD  9944 LEVEL 3 COMMUNICATIONS, LLC - WV 254      
304-553 8 Charleston Zone 1 WV CUDNWVAAG01  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 254      
304-553 9 Charleston Zone 1 WV CUDNWVAAG01  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 254      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.