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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Switch: BLARMDBL1MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-809 A Bel Air MD 7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 238      
410-914 A Churchville MD 7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 238      
443-209 A Havre de Grace MD 7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 238      
443-245 A Elkton MD 7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 238      
443-318 A Cockeysville MD 7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 238      
443-319 A Columbia MD 7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 238      
443-374 A Aberdeen MD 7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 236      
443-675 A Randallstown MD 7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 238      
443-685 A Severn MD 7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 238      
443-715 A North East MD 7944 CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD 238      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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