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

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
410-773 A Cockeysville MD CYVLMDDADS0  9212 VERIZON MARYLAND, INC. 238      
410-773 0 Cockeysville MD   2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238   2003-12-25   
410-773 1 Cockeysville MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-773 2 Cockeysville MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-773 3 Cockeysville MD   9212 VERIZON MARYLAND, INC. 238      
410-773 4 Cockeysville MD   9212 VERIZON MARYLAND, INC. 238      
410-773 5 Cockeysville MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-773 6 Cockeysville MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-773 7 Cockeysville MD   9212 VERIZON MARYLAND, INC. 238      
410-773 8 Cockeysville MD   9212 VERIZON MARYLAND, INC. 238      
410-773 9 Cockeysville MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-05-08   
410-774 A Crofton MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-774 0 Crofton MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-25   
410-774 1 Crofton MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-25   
410-774 2 Crofton MD   4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2004-02-14   
410-774 3 Crofton MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   
410-774 4 Crofton MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2003-08-20   
410-774 5 Crofton MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-02-11   
410-774 6 Crofton MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-22   
410-774 7 Crofton MD   9212 VERIZON MARYLAND, INC. 238   2005-10-15   
410-774 8 Crofton MD   829J PAETEC ITEL, LLC 238   2003-02-25   
410-774 9 Crofton MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-775 A Union Bridge MD UNBRMDUBRS0  9212 VERIZON MARYLAND, INC. 238      
410-775 0 Union Bridge MD   9212 VERIZON MARYLAND, INC. 238      
410-775 1 Union Bridge MD   9212 VERIZON MARYLAND, INC. 238      
410-775 2 Union Bridge MD   9212 VERIZON MARYLAND, INC. 238      
410-775 3 Union Bridge MD   8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238   2006-05-05   
410-775 4 Union Bridge MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2013-02-02   
410-775 5 Union Bridge MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-05   
410-775 6 Union Bridge MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
410-775 7 Union Bridge MD   9212 VERIZON MARYLAND, INC. 238      
410-775 8 Union Bridge MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-22   
410-775 9 Union Bridge MD   876D ONVOY, LLC - MD 238   2016-03-28   
410-776 A Bel Air MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-776 0 Bel Air MD   2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238   2003-12-25   
410-776 1 Bel Air MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-08-26   
410-776 2 Bel Air MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-776 3 Bel Air MD   318J COMCAST IP PHONE, LLC 238   2005-03-10   
410-776 4 Bel Air MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-08-26   
410-776 5 Bel Air MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-08-26   
410-776 6 Bel Air MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-776 7 Bel Air MD   829J PAETEC ITEL, LLC 238   2005-04-04   
410-776 8 Bel Air MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-10-11   
410-776 9 Bel Air MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-10-11   
410-777 A Severna Park MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-777 0 Severna Park MD   5562 METROPCS, INC. 238   2011-08-18   
410-777 1 Severna Park MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-777 2 Severna Park MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-777 3 Severna Park MD   5562 METROPCS, INC. 238   2011-10-03   
410-777 4 Severna Park MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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