Local Calling Guide

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NPA: 410 [Rate centres in NPA 410] [Dial plan for NPA 410]

NXX: 999

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-999 A Glen Burnie MD BLTMMDSN3MD  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238      
410-999 0 Glen Burnie MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-11-28   
410-999 1 Glen Burnie MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-10-14   
410-999 2 Glen Burnie MD BLTMMDCH25Z  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238   2010-11-06   
410-999 3 Glen Burnie MD BLTMMDCH25Z  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238   2010-11-06   
410-999 4 Glen Burnie MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-10-28   
410-999 5 Glen Burnie MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-10-28   
410-999 6 Glen Burnie MD BLTMMDCH25Z  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238   2003-07-26   
410-999 7 Glen Burnie MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-10-28   
410-999 8 Glen Burnie MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2012-06-22   
410-999 9 Glen Burnie MD BLTMMDSN3MD  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238   2003-07-26   

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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