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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
443-221 1 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-05-12   
443-221 2 Annapolis MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2010-08-01   
443-221 3 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-05-12   
443-221 4 Annapolis MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-221 5 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-05-12   
443-221 6 Annapolis MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2014-01-24   
443-221 7 Annapolis MD BLTMMDCHXFX  318J COMCAST IP PHONE LLC 238   2011-07-15   
443-221 8 Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-07-15   
443-221 9 Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-07-15   
443-222 A Worthington MD BLTMMDSNDS5  4773 XO MARYLAND, LLC 238      
443-222 0 Worthington MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2020-04-30   
443-222 1 Worthington MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2020-04-30   
443-222 2 Worthington MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC. - MD 238   2019-03-03   
443-222 3 Worthington MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   
443-222 4 Worthington MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   
443-222 5 Worthington MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   
443-222 6 Worthington MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC. - MD 238   2019-03-29   
443-222 7 Worthington MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC. - MD 238   2019-03-29   
443-222 8 Worthington MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2019-02-19   
443-222 9 Worthington MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2019-02-19   
443-223 A Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-224 A Baltimore MD BLTOMDKHDS0  7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238      
443-224 0 Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2004-04-08   
443-224 1 Baltimore MD BLTOMDKHDS0  7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238      
443-224 2 Baltimore MD HNVAMDBHRS0  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238   2006-07-05   
443-224 3 Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2004-04-08   
443-224 4 Baltimore MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2005-06-25   
443-224 5 Baltimore MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2005-06-25   
443-224 6 Baltimore MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2005-06-25   
443-224 7 Baltimore MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2005-06-25   
443-224 8 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2004-12-03   
443-224 9 Baltimore MD BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238   2006-08-17   
443-225 A Cambridge MD SLBRMDSBRMD  6664 SPRINT SPECTRUM L.P. 242      
443-225 0 Cambridge MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2020-09-09   
443-225 1 Cambridge MD SLBRMDSBRMD  6664 SPRINT SPECTRUM L.P. 242   2005-02-28   
443-225 2 Cambridge MD SLBRMDSBRMD  6664 SPRINT SPECTRUM L.P. 242   2010-07-20   
443-225 3 Cambridge MD SLBRMDSBRMD  6664 SPRINT SPECTRUM L.P. 242   2010-09-07   
443-225 4 Cambridge MD SLBRMDSBXFX  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 242   2007-12-04   
443-225 5 Cambridge MD SLBRMDSBXLX  318J COMCAST IP PHONE LLC 242   2006-07-31   
443-225 6 Cambridge MD SLBRMDSBXLX  318J COMCAST IP PHONE LLC 242   2007-09-20   
443-225 7 Cambridge MD ESTNMDES5MD  7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 242   2009-03-02   
443-225 8 Cambridge MD SLBRMDSBRMD  6664 SPRINT SPECTRUM L.P. 242   2006-08-24   
443-225 9 Cambridge MD SLBRMDSBRMD  6664 SPRINT SPECTRUM L.P. 242   2004-03-15   
443-226 A Baltimore MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238      
443-227 A Port Deposit MD BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238      
443-227 0 Port Deposit MD BLTMMDCHX7X  073H TELNYX LLC 238   2017-04-26   
443-227 1 Port Deposit MD BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238      
443-227 2 Port Deposit MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-07-07   
443-227 3 Port Deposit MD BLTMMDCHXVX  321J HD CARRIER LLC 238   2016-05-14   
443-227 4 Port Deposit MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-17   

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Last updated: Sun, 07 Feb 2021 01:52:50 UTC

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