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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
443-764 3 Glen Burnie MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2010-06-18   
443-764 4 Glen Burnie MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2010-09-02   
443-764 5 Glen Burnie MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2010-11-07   
443-764 6 Glen Burnie MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2010-11-16   
443-764 7 Glen Burnie MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-09-12   
443-764 8 Glen Burnie MD   876D ONVOY, LLC - MD 238   2012-10-07   
443-764 9 Glen Burnie MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2009-07-13   
443-765 A Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-765 0 Catonsville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-765 1 Catonsville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-01-19   
443-765 2 Catonsville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-01-19   
443-765 3 Catonsville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-01-19   
443-765 4 Catonsville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-01-19   
443-765 5 Catonsville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-01-19   
443-765 6 Catonsville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-01-19   
443-765 7 Catonsville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-01-19   
443-765 8 Catonsville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-01-19   
443-765 9 Catonsville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-04-27   
443-766 A Columbia MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-766 0 Columbia MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-12-14   
443-766 1 Columbia MD   829J PAETEC ITEL, LLC 238   2005-07-09   
443-766 2 Columbia MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2016-08-03   
443-766 3 Columbia MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2016-08-03   
443-766 4 Columbia MD   5562 METROPCS, INC. 238   2015-10-01   
443-766 5 Columbia MD   5562 METROPCS, INC. 238   2015-09-03   
443-766 6 Columbia MD   5562 METROPCS, INC. 238   2015-11-03   
443-766 7 Columbia MD   829J PAETEC ITEL, LLC 238   2006-07-15   
443-766 8 Columbia MD   5562 METROPCS, INC. 238   2015-10-30   
443-766 9 Columbia MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2008-01-14   
443-767 A Worthington MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-767 0 Worthington MD   829J PAETEC ITEL, LLC 238      
443-767 1 Worthington MD   876D ONVOY, LLC - MD 238   2020-06-11   
443-767 2 Worthington MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-04-02   
443-767 3 Worthington MD   876D ONVOY, LLC - MD 238   2020-06-11   
443-767 4 Worthington MD   876D ONVOY, LLC - MD 238   2012-10-08   
443-767 6 Worthington MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-29   
443-767 7 Worthington MD   829J PAETEC ITEL, LLC 238   2008-09-08   
443-767 8 Worthington MD   829J PAETEC ITEL, LLC 238      
443-767 9 Worthington MD   829J PAETEC ITEL, LLC 238      
443-768 A Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-768 0 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-768 1 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-768 2 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-768 3 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-768 4 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-768 5 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-768 6 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-768 7 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-768 8 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-768 9 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      

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

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