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NPA: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-866 3 Bel Air MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-866 4 Bel Air MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-866 5 Bel Air MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-866 6 Bel Air MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-866 7 Bel Air MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-866 8 Bel Air MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-866 9 Bel Air MD   5562 METROPCS, INC. 238      
443-867 A Glen Burnie MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-867 0 Glen Burnie MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2004-09-29   
443-867 1 Glen Burnie MD   829J PAETEC ITEL, LLC 238      
443-867 2 Glen Burnie MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2004-12-02   
443-867 3 Glen Burnie MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-01-27   
443-867 4 Glen Burnie MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2005-02-03   
443-867 5 Glen Burnie MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-03-12   
443-867 6 Glen Burnie MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2005-01-02   
443-867 7 Glen Burnie MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2004-07-02   
443-867 8 Glen Burnie MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2005-09-01   
443-867 9 Glen Burnie MD   5562 METROPCS, INC. 238   2005-03-28   
443-868 A Essex MD BLTMMDFRDS0  9212 VERIZON MARYLAND, INC. 238      
443-868 0 Essex MD   9212 VERIZON MARYLAND, INC. 238      
443-868 1 Essex MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-868 2 Essex MD   876D ONVOY, LLC - MD 238   2014-09-01   
443-868 3 Essex MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-868 4 Essex MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2016-04-30   
443-868 5 Essex MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2016-04-30   
443-868 6 Essex MD   829J PAETEC ITEL, LLC 238   2011-10-21   
443-868 7 Essex MD   318J COMCAST IP PHONE, LLC 238   2015-07-16   
443-868 8 Essex MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2015-03-16   
443-868 9 Essex MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-869 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-869 0 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-08-05   
443-869 1 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-08-07   
443-869 2 Baltimore MD   318J COMCAST IP PHONE, LLC 238   2006-10-07   
443-869 3 Baltimore MD   318J COMCAST IP PHONE, LLC 238   2006-10-07   
443-869 4 Baltimore MD   318J COMCAST IP PHONE, LLC 238   2006-10-07   
443-869 5 Baltimore MD   318J COMCAST IP PHONE, LLC 238   2006-10-07   
443-869 6 Baltimore MD   318J COMCAST IP PHONE, LLC 238   2009-09-10   
443-869 7 Baltimore MD   624H ONVOY SPECTRUM, LLC 238   2024-10-23   
443-869 8 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-08-26   
443-869 9 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2024-08-26   
443-870 A Pikesville MD BLTMMDDNDS2  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
443-870 0 Pikesville MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2014-10-10   
443-870 1 Pikesville MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2014-10-10   
443-870 2 Pikesville MD   7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
443-870 3 Pikesville MD   318J COMCAST IP PHONE, LLC 238   2006-10-15   
443-870 4 Pikesville MD   876D ONVOY, LLC - MD 238   2014-12-31   
443-870 5 Pikesville MD   876D ONVOY, LLC - MD 238   2014-12-31   
443-870 6 Pikesville MD   7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
443-870 7 Pikesville MD   7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
443-870 8 Pikesville MD   7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      

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

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