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.

Switch: BLTQMD013MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-314 0 Arbutus MD 939H COMMIO, LLC 238      
443-304 5 Arbutus MD 939H COMMIO, LLC 238      
443-443 A Arbutus MD 939H COMMIO, LLC 238   2024-01-22   
443-443 0 Arbutus MD 939H COMMIO, LLC 238      
443-443 1 Arbutus MD 939H COMMIO, LLC 238      
443-443 2 Arbutus MD 939H COMMIO, LLC 238      
443-443 3 Arbutus MD 939H COMMIO, LLC 238      
443-443 4 Arbutus MD 939H COMMIO, LLC 238      
443-543 4 Arbutus MD 939H COMMIO, LLC 238      
443-568 6 Arbutus MD 939H COMMIO, LLC 238      
443-701 8 Arbutus MD 939H COMMIO, LLC 238      
667-263 0 Dundalk MD 939H COMMIO, LLC 238      
667-263 1 Dundalk MD 939H COMMIO, LLC 238      
667-263 5 Dundalk MD 939H COMMIO, LLC 238      
667-263 8 Dundalk MD 939H COMMIO, LLC 238      
667-299 8 Annapolis MD 939H COMMIO, LLC 238      
667-310 4 Parkville MD 939H COMMIO, LLC 238      
667-310 5 Parkville MD 939H COMMIO, LLC 238      
667-310 6 Parkville MD 939H COMMIO, LLC 238      
667-310 7 Parkville MD 939H COMMIO, LLC 238      
667-310 8 Parkville MD 939H COMMIO, LLC 238      
667-315 7 Bel Air MD 939H COMMIO, LLC 238      
667-315 8 Bel Air MD 939H COMMIO, LLC 238      
667-315 9 Bel Air MD 939H COMMIO, LLC 238      
667-325 0 Glen Burnie MD 939H COMMIO, LLC 238      
667-325 1 Glen Burnie MD 939H COMMIO, LLC 238      
667-375 0 Chase MD 939H COMMIO, LLC 238      
667-403 6 Towson MD 939H COMMIO, LLC 238      
667-403 7 Towson MD 939H COMMIO, LLC 238      
667-403 8 Towson MD 939H COMMIO, LLC 238      
667-403 9 Towson MD 939H COMMIO, LLC 238      
667-404 1 Prince Frederick MD 939H COMMIO, LLC 238      
667-454 6 Bel Air MD 939H COMMIO, LLC 238      
667-454 7 Bel Air MD 939H COMMIO, LLC 238      
667-454 8 Bel Air MD 939H COMMIO, LLC 238      
667-456 0 Dundalk MD 939H COMMIO, LLC 238      
667-456 1 Dundalk MD 939H COMMIO, LLC 238      
667-456 2 Dundalk MD 939H COMMIO, LLC 238      
667-456 3 Dundalk MD 939H COMMIO, LLC 238      
667-678 6 Columbia MD 939H COMMIO, LLC 238      
667-678 7 Columbia MD 939H COMMIO, LLC 238      
667-678 8 Columbia MD 939H COMMIO, LLC 238      
667-678 9 Columbia MD 939H COMMIO, LLC 238      
667-802 8 Catonsville MD 939H COMMIO, LLC 238      
667-867 A Baltimore MD 939H COMMIO, LLC 238      
667-867 5 Baltimore MD 939H COMMIO, LLC 238      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.