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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
443-515 7 Cambridge MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 242   2015-04-12   
443-515 8 Cambridge MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 242   2015-04-12   
443-515 9 Cambridge MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 242   2014-11-08   
443-516 A Sykesville MD BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-516 0 Sykesville MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-516 1 Sykesville MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-516 2 Sykesville MD   4716 PAETEC COMMUNICATIONS, INC. - MD 238   2004-12-22   
443-516 3 Sykesville MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2019-05-01   
443-516 4 Sykesville MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-516 5 Sykesville MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-516 6 Sykesville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2016-09-19   
443-516 7 Sykesville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-06-02   
443-516 8 Sykesville MD   876D ONVOY, LLC - MD 238   2016-03-28   
443-516 9 Sykesville MD   876D ONVOY, LLC - MD 238   2016-03-28   
443-517 A Glen Burnie MD BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-517 0 Glen Burnie MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-517 1 Glen Burnie MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-517 2 Glen Burnie MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2019-12-20   
443-517 3 Glen Burnie MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-04-01   
443-517 4 Glen Burnie MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-517 5 Glen Burnie MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-05-05   
443-517 6 Glen Burnie MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2005-03-10   
443-517 7 Glen Burnie MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2005-12-02   
443-517 8 Glen Burnie MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238   2008-04-21   
443-517 9 Glen Burnie MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-12-06   
443-518 A Columbia MD CLMAMDCBDS0  9212 VERIZON MARYLAND, INC. 238   2009-03-02   
443-518 0 Columbia MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-05-26   
443-518 1 Columbia MD   9212 VERIZON MARYLAND, INC. 238   2009-03-02   
443-518 2 Columbia MD   9212 VERIZON MARYLAND, INC. 238   2009-03-02   
443-518 3 Columbia MD   9212 VERIZON MARYLAND, INC. 238   2009-03-02   
443-518 4 Columbia MD   9212 VERIZON MARYLAND, INC. 238   2009-03-02   
443-518 5 Columbia MD   9212 VERIZON MARYLAND, INC. 238   2009-03-02   
443-518 6 Columbia MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-05-26   
443-518 7 Columbia MD   8992 ALLEGIANCE TELECOM, INC. - MD 238   2010-04-08   
443-518 8 Columbia MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2010-03-29   
443-518 9 Columbia MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-06-23   
443-519 A Towson MD BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-519 0 Towson MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-519 1 Towson MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-519 2 Towson MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2004-12-28   
443-519 3 Towson MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-05-01   
443-519 4 Towson MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-519 5 Towson MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2008-04-30   
443-519 6 Towson MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-06-01   
443-519 7 Towson MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-06-01   
443-519 8 Towson MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-06-01   
443-519 9 Towson MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-06-01   
443-520 A Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-521 A Cambridge MD SLBRMDAZCM2  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242      
443-521 0 Cambridge MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242      

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Last updated: Sun, 31 May 2020 11:59:01 UTC

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