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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
443-789 A Westminster MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-789 0 Westminster MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-789 1 Westminster MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-789 2 Westminster MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-789 3 Westminster MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-03-08   
443-789 4 Westminster MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-789 5 Westminster MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2008-10-25   
443-789 6 Westminster MD   5562 METROPCS, INC. 238   2007-01-03   
443-789 7 Westminster MD   5562 METROPCS, INC. 238   2007-01-03   
443-789 8 Westminster MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2004-09-10   
443-789 9 Westminster MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2004-09-10   
443-790 A Glen Burnie MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-790 0 Glen Burnie MD   5562 METROPCS, INC. 238      
443-790 1 Glen Burnie MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-790 2 Glen Burnie MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-790 3 Glen Burnie MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-790 4 Glen Burnie MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-790 5 Glen Burnie MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-790 6 Glen Burnie MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-790 7 Glen Burnie MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-790 8 Glen Burnie MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-790 9 Glen Burnie MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-791 A Towson MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-791 0 Towson MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-791 1 Towson MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-791 2 Towson MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-791 3 Towson MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-09-16   
443-791 4 Towson MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-791 5 Towson MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-09-13   
443-791 6 Towson MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-09-13   
443-791 7 Towson MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-09-13   
443-791 8 Towson MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-06-02   
443-791 9 Towson MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-792 A Brooklyn Park-Linthicum MD BRKLMDBKRP0  9212 VERIZON MARYLAND, INC. 238      
443-792 0 Brooklyn Park-Linthicum MD   876D ONVOY, LLC - MD 238   2014-10-07   
443-792 1 Brooklyn Park-Linthicum MD   515J IP HORIZON LLC 238   2015-03-23   
443-792 2 Brooklyn Park-Linthicum MD   9212 VERIZON MARYLAND, INC. 238   2007-11-17   
443-792 3 Brooklyn Park-Linthicum MD   9212 VERIZON MARYLAND, INC. 238   2007-11-17   
443-792 4 Brooklyn Park-Linthicum MD   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-792 5 Brooklyn Park-Linthicum MD   829J PAETEC ITEL, LLC 238   2009-04-27   
443-792 6 Brooklyn Park-Linthicum MD   515J IP HORIZON LLC 238   2016-01-04   
443-792 7 Brooklyn Park-Linthicum MD   508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-04-03   
443-792 8 Brooklyn Park-Linthicum MD   876D ONVOY, LLC - MD 238   2014-10-07   
443-792 9 Brooklyn Park-Linthicum MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-03-21   
443-793 A Parkville MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-793 0 Parkville MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-793 1 Parkville MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-793 2 Parkville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-01   
443-793 3 Parkville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-01   
443-793 4 Parkville MD   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      

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

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