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: FRDRMDBACM1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
240-285 A Frederick MD 6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240      
240-357 A Frederick MD 6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2006-08-05   
240-397 A Frederick MD 6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2009-05-07   
240-439 A Frederick MD 6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2008-08-14   
240-446 A Frederick MD 6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240      
240-457 A Frederick MD 6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2008-11-14   
240-578 A Frederick MD 6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2011-09-05   
240-772 A Frederick MD 6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2012-01-19   
301-471 A Frederick MD 6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240      
301-514 A Frederick MD 6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240      
301-606 A Frederick MD 6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240      
301-639 A Frederick MD 6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240      
301-788 A Frederick MD 6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240      

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

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