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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
443-314 1 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-314 2 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-314 3 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-314 4 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-314 5 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-314 6 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-314 7 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-314 8 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-314 9 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-18   
443-315 A Catonsville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-315 0 Catonsville MD   145J TERRA NOVA TELECOM INC. 238   2025-05-28   
443-315 2 Catonsville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2013-08-01   
443-315 3 Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-02-05   
443-315 5 Catonsville MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2012-05-26   
443-315 6 Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-02-05   
443-315 7 Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-02-05   
443-315 8 Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-02-05   
443-315 9 Catonsville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-02-05   
443-316 A Woodlawn MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-316 0 Woodlawn MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-12-02   
443-316 1 Woodlawn MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-12-02   
443-316 2 Woodlawn MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2023-05-18   
443-316 3 Woodlawn MD   829J PAETEC ITEL, LLC 238   2006-05-11   
443-316 4 Woodlawn MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-05-09   
443-316 5 Woodlawn MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-316 6 Woodlawn MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-316 7 Woodlawn MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-04-07   
443-316 8 Woodlawn MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2008-02-01   
443-316 9 Woodlawn MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-05-01   
443-317 A Chase MD   071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-317 2 Chase MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-08   
443-317 3 Chase MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-01-09   
443-317 6 Chase MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2015-08-05   
443-317 7 Chase MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2016-07-14   
443-317 8 Chase MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2007-04-12   
443-317 9 Chase MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2014-04-27   
443-318 A Cockeysville MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-318 0 Cockeysville MD   829J PAETEC ITEL, LLC 238      
443-318 1 Cockeysville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2020-09-04   
443-318 2 Cockeysville MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2020-07-10   
443-318 3 Cockeysville MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2015-07-03   
443-318 4 Cockeysville MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2005-03-10   
443-318 5 Cockeysville MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2017-01-18   
443-318 6 Cockeysville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2020-09-28   
443-318 7 Cockeysville MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2007-12-04   
443-318 8 Cockeysville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-10-14   
443-318 9 Cockeysville MD   829J PAETEC ITEL, LLC 238      
443-319 A Columbia MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-319 0 Columbia MD   829J PAETEC ITEL, LLC 238      
443-319 1 Columbia MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2020-08-13   
443-319 2 Columbia MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2016-01-08   
443-319 3 Columbia MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2008-06-16   
443-319 4 Columbia MD   829J PAETEC ITEL, LLC 238   2005-07-04   
443-319 5 Columbia MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2005-03-10   
443-319 6 Columbia MD   829J PAETEC ITEL, LLC 238      
443-319 7 Columbia MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2016-02-03   
443-319 8 Columbia MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2010-11-19   
443-319 9 Columbia MD   829J PAETEC ITEL, LLC 238      
443-320 A Baltimore MD BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 238      
443-320 0 Baltimore MD BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC. - MD 238      
443-320 1 Baltimore MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-320 2 Baltimore MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-320 3 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2004-12-03   
443-320 4 Baltimore MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-320 5 Baltimore MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-320 6 Baltimore MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-01-06   
443-320 7 Baltimore MD   829J PAETEC ITEL, LLC 238   2012-03-13   
443-320 8 Baltimore MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-01-06   
443-320 9 Baltimore MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-321 A Annapolis MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-322 A Towson MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-322 0 Towson MD   829J PAETEC ITEL, LLC 238      
443-322 1 Towson MD   829J PAETEC ITEL, LLC 238      
443-322 2 Towson MD   829J PAETEC ITEL, LLC 238      
443-322 3 Towson MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2020-06-04   
443-322 4 Towson MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-06-01   
443-322 5 Towson MD   829J PAETEC ITEL, LLC 238      
443-322 6 Towson MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-06-01   
443-322 7 Towson MD   829J PAETEC ITEL, LLC 238      
443-322 8 Towson MD   829J PAETEC ITEL, LLC 238      
443-322 9 Towson MD   829J PAETEC ITEL, LLC 238      
443-323 A Sharptown MD   829J PAETEC ITEL, LLC 242   2025-04-01   
443-323 0 Sharptown MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2020-04-30   
443-323 1 Sharptown MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2020-07-04   
443-323 2 Sharptown MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2020-07-04   
443-323 3 Sharptown MD SLBRMDSBXLX  318J COMCAST IP PHONE, LLC 242   2006-07-31   
443-323 4 Sharptown MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2019-05-02   
443-323 5 Sharptown MD SLBRMD906MD  145J TERRA NOVA TELECOM INC. 242   2024-02-15   
443-323 6 Sharptown MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2019-05-02   
443-323 7 Sharptown MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-06-17   
443-323 8 Sharptown MD   2593 CORE COMMUNICATIONS, INC.- MD 242   2018-06-17   
443-323 9 Sharptown MD   829J PAETEC ITEL, LLC 242      
443-324 A Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-324 0 Baltimore MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-324 1 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-324 2 Baltimore MD BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-324 3 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-324 4 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-324 5 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-324 6 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      

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Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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