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Baltimore, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-558 9   9212 VERIZON MARYLAND, INC. 238      
410-563 A BLTMMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
410-566 A BLTMMDEDRP0  9212 VERIZON MARYLAND, INC. 238      
410-576 A BLTMMDCHDS3  9212 VERIZON MARYLAND, INC. 238      
410-578 A BLTMMDLBDS0  9212 VERIZON MARYLAND, INC. 238      
410-585 A PIVLMDPKDS1  9212 VERIZON MARYLAND, INC. 238      
410-585 0   9212 VERIZON MARYLAND, INC. 238      
410-585 1   9212 VERIZON MARYLAND, INC. 238      
410-585 2   9212 VERIZON MARYLAND, INC. 238      
410-585 3   9212 VERIZON MARYLAND, INC. 238      
410-585 4   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-03-10   
410-585 5   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-03-10   
410-585 6   829J PAETEC ITEL, LLC 238   2005-02-21   
410-585 7   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2004-01-02   
410-585 8   829J PAETEC ITEL, LLC 238   2005-02-21   
410-585 9   829J PAETEC ITEL, LLC 238   2005-02-21   
410-591 A BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
410-598 A BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
410-601 A BLTMMDLBDS0  9212 VERIZON MARYLAND, INC. 238      
410-601 0   9212 VERIZON MARYLAND, INC. 238      
410-601 1   9212 VERIZON MARYLAND, INC. 238      
410-601 2   9212 VERIZON MARYLAND, INC. 238      
410-601 3   318J COMCAST IP PHONE, LLC 238   2014-06-12   
410-601 4   9212 VERIZON MARYLAND, INC. 238      
410-601 5   9212 VERIZON MARYLAND, INC. 238      
410-601 6   9212 VERIZON MARYLAND, INC. 238      
410-601 7   9212 VERIZON MARYLAND, INC. 238      
410-601 8   9212 VERIZON MARYLAND, INC. 238      
410-601 9   9212 VERIZON MARYLAND, INC. 238      
410-605 A BLTMMDCHDS2  9212 VERIZON MARYLAND, INC. 238      
410-613 A BLTMMDCH1DD  9212 VERIZON MARYLAND, INC. 238      
410-614 A BLTMMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
410-617 A BLTMMDYKDS0  9212 VERIZON MARYLAND, INC. 238      
410-617 0   318J COMCAST IP PHONE, LLC 238   2014-06-12   
410-617 1   9212 VERIZON MARYLAND, INC. 238      
410-617 2   9212 VERIZON MARYLAND, INC. 238      
410-617 3   9212 VERIZON MARYLAND, INC. 238      
410-617 4   9212 VERIZON MARYLAND, INC. 238      
410-617 5   9212 VERIZON MARYLAND, INC. 238      
410-617 6   9212 VERIZON MARYLAND, INC. 238      
410-617 7   9212 VERIZON MARYLAND, INC. 238      
410-617 8   318J COMCAST IP PHONE, LLC 238   2014-06-12   
410-617 9   071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-08-12   
410-622 A BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-622 0   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-09-27   
410-622 1   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-09-27   
410-622 2   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-09-27   
410-622 3   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2011-09-26   
410-622 4   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-09-27   
410-622 5   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-09-27   
410-622 6   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-09-27   
410-622 7   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-09-27   
410-622 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-09-27   
410-622 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-09-27   
410-624 A BLTMMDEDRP0  9212 VERIZON MARYLAND, INC. 238      
410-624 0   9212 VERIZON MARYLAND, INC. 238      
410-624 1   9212 VERIZON MARYLAND, INC. 238      
410-624 2   829J PAETEC ITEL, LLC 238   2004-05-24   
410-624 3   9212 VERIZON MARYLAND, INC. 238      
410-624 4   9212 VERIZON MARYLAND, INC. 238      
410-624 5   318J COMCAST IP PHONE, LLC 238   2015-09-18   
410-624 6   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-05-06   
410-624 7   318J COMCAST IP PHONE, LLC 238   2015-10-22   
410-624 8   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-05-06   
410-624 9   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-05-06   
410-625 A BLTMMDCHDS3  9212 VERIZON MARYLAND, INC. 238      
410-627 A BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
410-631 A DNDLMDDNDS0  9212 VERIZON MARYLAND, INC. 238      
410-631 0   9212 VERIZON MARYLAND, INC. 238      
410-631 1   9212 VERIZON MARYLAND, INC. 238      
410-631 2   9212 VERIZON MARYLAND, INC. 238      
410-631 3   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238   2020-10-12   
410-631 4   9212 VERIZON MARYLAND, INC. 238      
410-631 5   9212 VERIZON MARYLAND, INC. 238      
410-631 6   9212 VERIZON MARYLAND, INC. 238      
410-631 7   9212 VERIZON MARYLAND, INC. 238      
410-631 8   9212 VERIZON MARYLAND, INC. 238      
410-631 9   9212 VERIZON MARYLAND, INC. 238      
410-633 A DNDLMDDNDS0  9212 VERIZON MARYLAND, INC. 238      
410-637 A BLTMMDCHDS2  9212 VERIZON MARYLAND, INC. 238      
410-637 0   9212 VERIZON MARYLAND, INC. 238      
410-637 1   9212 VERIZON MARYLAND, INC. 238      
410-637 2   9212 VERIZON MARYLAND, INC. 238      
410-637 3   9212 VERIZON MARYLAND, INC. 238      
410-637 4   9212 VERIZON MARYLAND, INC. 238      
410-637 5   9212 VERIZON MARYLAND, INC. 238      
410-637 6   9212 VERIZON MARYLAND, INC. 238      
410-637 7   9212 VERIZON MARYLAND, INC. 238      
410-637 8   9212 VERIZON MARYLAND, INC. 238      
410-637 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-09-23   
410-640 A HNVAMDAE3MD  6630 USA MOBILITY WIRELESS, INC. 238      
410-644 A ARBTMDARDS0  9212 VERIZON MARYLAND, INC. 238      
410-646 A ARBTMDARDS0  9212 VERIZON MARYLAND, INC. 238      
410-646 0   9212 VERIZON MARYLAND, INC. 238      
410-646 1   9212 VERIZON MARYLAND, INC. 238      
410-646 2   9212 VERIZON MARYLAND, INC. 238      
410-646 3   9212 VERIZON MARYLAND, INC. 238      
410-646 4   9212 VERIZON MARYLAND, INC. 238      
410-646 5   9212 VERIZON MARYLAND, INC. 238      
410-646 6   9212 VERIZON MARYLAND, INC. 238      

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Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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