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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
410-645 1 Woodlawn MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-645 2 Woodlawn MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-29   
410-645 3 Woodlawn MD   4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2004-02-11   
410-645 4 Woodlawn MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-04-02   
410-645 5 Woodlawn MD   7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238   2006-06-01   
410-645 6 Woodlawn MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   
410-645 7 Woodlawn MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   
410-645 8 Woodlawn MD   318J COMCAST IP PHONE, LLC 238   2007-08-13   
410-645 9 Woodlawn MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-646 A Baltimore MD ARBTMDARDS0  9212 VERIZON MARYLAND, INC. 238      
410-646 0 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-646 1 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-646 2 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-646 3 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-646 4 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-646 5 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-646 6 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-646 7 Baltimore MD   9212 VERIZON MARYLAND, INC. 238      
410-646 8 Baltimore MD   318J COMCAST IP PHONE, LLC 238   2016-01-05   
410-646 9 Baltimore MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-01   
410-647 A Severna Park MD SVPKMDSPRP0  9212 VERIZON MARYLAND, INC. 238      
410-648 A Galena MD GALNMDGLRS0  9212 VERIZON MARYLAND, INC. 242      
410-648 0 Galena MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2004-04-03   
410-648 1 Galena MD   228C IDT AMERICA, CORP. - MD 242   2006-05-21   
410-648 2 Galena MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 242   2006-06-26   
410-648 3 Galena MD   624H ONVOY SPECTRUM, LLC 242   2022-05-23   
410-648 4 Galena MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 242   2013-06-23   
410-648 5 Galena MD   9212 VERIZON MARYLAND, INC. 242      
410-648 6 Galena MD   9212 VERIZON MARYLAND, INC. 242      
410-648 7 Galena MD   318J COMCAST IP PHONE, LLC 242   2006-07-31   
410-648 8 Galena MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 242   2014-10-20   
410-648 9 Galena MD   876D ONVOY, LLC - MD 242   2017-04-13   
410-649 A Baltimore MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-649 0 Baltimore MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-649 1 Baltimore MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-649 2 Baltimore MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-649 3 Baltimore MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-649 4 Baltimore MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-649 5 Baltimore MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-649 6 Baltimore MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-649 7 Baltimore MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-649 8 Baltimore MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-649 9 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-09-23   
410-650 A Dundalk MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
410-650 0 Dundalk MD   876D ONVOY, LLC - MD 238   2016-03-31   
410-650 1 Dundalk MD   8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238   2015-06-11   
410-650 2 Dundalk MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-650 3 Dundalk MD   4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2003-11-08   
410-650 4 Dundalk MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-05-08   
410-650 5 Dundalk MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2004-11-27   

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

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