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: CLMAMDNIDS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
410-316 3 Cockeysville MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-316 4 Cockeysville MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-582 2 Glen Burnie MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238   2016-05-05   
410-582 3 Glen Burnie MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238   2016-05-05   
443-273 A Reisterstown MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-273 0 Reisterstown MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-273 9 Reisterstown MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-364 A Ellicott City MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-364 5 Ellicott City MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-620 A Waterloo MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-620 9 Waterloo MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-662 4 Sparks-Glencoe MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238   2004-07-24   
443-733 A Waterloo MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-733 9 Waterloo MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-764 2 Glen Burnie MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238   2010-07-15   
443-886 A Cockeysville MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-886 2 Cockeysville MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-896 1 Columbia MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-920 A Sykesville MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-920 9 Sykesville MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-933 A Cockeysville MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-933 4 Cockeysville MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238   2004-06-11   
443-942 A Severna Park MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-942 9 Severna Park MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
667-786 A Columbia MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
667-786 5 Columbia MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238   2016-01-04   
667-786 6 Columbia MD 7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238   2016-01-04   

Last updated: Wed, 01 Jun 2022 03:09:23 UTC

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