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Baltimore, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-646 7   9212 VERIZON MARYLAND, INC. 238      
410-646 8   318J COMCAST IP PHONE, LLC 238   2016-01-05   
410-646 9   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-01   
410-649 A BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-649 0   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-649 1   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-649 2   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-649 3   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-649 4   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-649 5   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-649 6   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-649 7   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-649 8   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-649 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-09-23   
410-659 A BLTMMDCHDS3  9212 VERIZON MARYLAND, INC. 238      
410-662 A BLTMMDUVDS0  9212 VERIZON MARYLAND, INC. 238      
410-662 0   9212 VERIZON MARYLAND, INC. 238      
410-662 1   9212 VERIZON MARYLAND, INC. 238      
410-662 2   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-05-06   
410-662 3   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-10-02   
410-662 4   9212 VERIZON MARYLAND, INC. 238      
410-662 5   9212 VERIZON MARYLAND, INC. 238      
410-662 6   9212 VERIZON MARYLAND, INC. 238      
410-662 7   9212 VERIZON MARYLAND, INC. 238      
410-662 8   9212 VERIZON MARYLAND, INC. 238      
410-662 9   9212 VERIZON MARYLAND, INC. 238      
410-664 A BLTMMDLBDS0  9212 VERIZON MARYLAND, INC. 238      
410-669 A BLTMMDMDDS0  9212 VERIZON MARYLAND, INC. 238      
410-675 A BLTMMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
410-685 A BLTMMDCHDS2  9212 VERIZON MARYLAND, INC. 238      
410-706 A BLTMMDCHDS2  9212 VERIZON MARYLAND, INC. 238      
410-710 A BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-710 0   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2006-01-07   
410-710 1   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2006-01-07   
410-710 2   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2006-01-07   
410-710 3   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2006-01-07   
410-710 4   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2006-01-07   
410-710 5   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2006-01-07   
410-710 6   829J PAETEC ITEL, LLC 238   2006-01-21   
410-710 7   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2006-02-03   
410-710 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2006-02-03   
410-710 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-11-24   
410-727 A BLTMMDCHDS3  9212 VERIZON MARYLAND, INC. 238      
410-728 A BLTMMDMDDS0  9212 VERIZON MARYLAND, INC. 238      
410-732 A BLTMMDWLDS0  9212 VERIZON MARYLAND, INC. 238      
410-735 A   829J PAETEC ITEL, LLC 238   2025-04-01   
410-735 0   829J PAETEC ITEL, LLC 238      
410-735 1   829J PAETEC ITEL, LLC 238      
410-735 2   829J PAETEC ITEL, LLC 238      
410-735 3   829J PAETEC ITEL, LLC 238      
410-735 4   9212 VERIZON MARYLAND, INC. 238   2003-10-18   
410-735 5   829J PAETEC ITEL, LLC 238      
410-735 6   9212 VERIZON MARYLAND, INC. 238   2003-09-26   
410-735 7   9212 VERIZON MARYLAND, INC. 238   2003-09-26   
410-735 8   829J PAETEC ITEL, LLC 238      
410-735 9   829J PAETEC ITEL, LLC 238      
410-736 A BLTMMDCHDS2  9212 VERIZON MARYLAND, INC. 238      
410-736 0   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-02-02   
410-736 1   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-02-02   
410-736 2   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-02-02   
410-736 3   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-02-02   
410-736 4   9212 VERIZON MARYLAND, INC. 238      
410-736 5   9212 VERIZON MARYLAND, INC. 238      
410-736 6   9212 VERIZON MARYLAND, INC. 238      
410-736 7   9212 VERIZON MARYLAND, INC. 238      
410-736 8   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-02-02   
410-736 9   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-02-02   
410-743 A HNVAMDAE3MD  6630 USA MOBILITY WIRELESS, INC. 238      
410-746 A BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
410-752 A BLTMMDCHDS3  9212 VERIZON MARYLAND, INC. 238      
410-759 A   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-759 0   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-02-15   
410-759 1   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-02-15   
410-759 2   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-01   
410-759 3   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-01   
410-759 4   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-01   
410-759 5   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-01   
410-759 6   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-01   
410-759 7   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-12   
410-759 8   4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2016-12-24   
410-759 9   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-02-15   
410-764 A PIVLMDPKDS1  9212 VERIZON MARYLAND, INC. 238      
410-767 A BLTMMDMDDS0  9212 VERIZON MARYLAND, INC. 238      
410-779 A BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
410-779 0   829J PAETEC ITEL, LLC 238      
410-779 1   829J PAETEC ITEL, LLC 238      
410-779 2   829J PAETEC ITEL, LLC 238      
410-779 3   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
410-779 4   829J PAETEC ITEL, LLC 238   2010-01-15   
410-779 5   829J PAETEC ITEL, LLC 238      
410-779 6   829J PAETEC ITEL, LLC 238      
410-779 7   829J PAETEC ITEL, LLC 238      
410-779 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2006-02-07   
410-779 9   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2010-03-29   
410-783 A BLTMMDCHDS3  9212 VERIZON MARYLAND, INC. 238      
410-800 A BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
410-800 0   829J PAETEC ITEL, LLC 238   2004-11-26   
410-800 1   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-06-19   
410-800 2   318J COMCAST IP PHONE, LLC 238   2005-03-10   
410-800 3   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-11-07   

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

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