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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
443-949 1 Annapolis MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2008-11-26   
443-949 2 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2011-03-10   
443-949 3 Annapolis MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-949 4 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2011-03-10   
443-949 5 Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2009-02-02   
443-949 6 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-03-19   
443-949 7 Annapolis MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2006-11-25   
443-949 8 Annapolis MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2006-11-25   
443-949 9 Annapolis MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2006-11-25   
443-951 A Annapolis MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-951 0 Annapolis MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-951 1 Annapolis MD BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238   2024-12-29   
443-951 2 Annapolis MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-951 3 Annapolis MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-10-25   
443-951 4 Annapolis MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-951 5 Annapolis MD BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2008-07-27   
443-951 6 Annapolis MD BLTMMDCHX7X  073H TELNYX LLC 238   2022-12-26   
443-951 7 Annapolis MD BLTMMDDNDS2  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238   2014-11-12   
443-951 8 Annapolis MD BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2008-07-27   
443-951 9 Annapolis MD BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2007-08-20   
443-952 A Westminster MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-952 0 Westminster MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-11-06   
443-952 1 Westminster MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-07-03   
443-952 2 Westminster MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-10   
443-952 3 Westminster MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-05-31   
443-952 4 Westminster MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2015-10-05   
443-952 5 Westminster MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2013-08-23   
443-952 6 Westminster MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-09-05   
443-952 7 Westminster MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2011-12-22   
443-952 8 Westminster MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-952 9 Westminster MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-953 A Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242      
443-953 0 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2011-11-06   
443-953 1 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2016-06-04   
443-953 2 Salisbury MD SLBRMDSCXMD  5562 METROPCS, INC. 242   2018-01-06   
443-953 3 Salisbury MD SLBRMDSCXMD  5562 METROPCS, INC. 242   2018-03-24   
443-953 4 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2018-07-20   
443-953 5 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2018-07-20   
443-953 6 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2022-03-19   
443-953 7 Salisbury MD ESTNMDESQMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2023-06-29   
443-953 8 Salisbury MD SLBRMDSCXMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242   2014-03-22   
443-953 9 Salisbury MD SLBRMDSCXMD  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 242   2014-03-22   
443-954 A Baltimore MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-954 0 Baltimore MD   829J PAETEC ITEL, LLC 238   2005-08-27   
443-954 1 Baltimore MD   829J PAETEC ITEL, LLC 238   2005-08-27   
443-954 2 Baltimore MD   829J PAETEC ITEL, LLC 238   2005-08-27   
443-954 3 Baltimore MD   829J PAETEC ITEL, LLC 238   2005-08-27   
443-954 4 Baltimore MD   829J PAETEC ITEL, LLC 238   2005-08-27   
443-954 5 Baltimore MD   829J PAETEC ITEL, LLC 238   2005-08-27   
443-954 6 Baltimore MD   829J PAETEC ITEL, LLC 238   2005-08-27   
443-954 7 Baltimore MD   829J PAETEC ITEL, LLC 238   2005-08-27   
443-954 8 Baltimore MD   829J PAETEC ITEL, LLC 238   2005-08-27   
443-954 9 Baltimore MD   829J PAETEC ITEL, LLC 238   2005-08-27   
443-955 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-955 0 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-05-06   
443-955 1 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-05-08   
443-955 2 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-06-02   
443-955 3 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-06-02   
443-955 4 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-06-02   
443-955 5 Baltimore MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-06-26   
443-955 6 Baltimore MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-06-26   
443-955 7 Baltimore MD   829J PAETEC ITEL, LLC 238   2007-11-10   
443-955 8 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-07-03   
443-955 9 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-07-03   
443-956 A Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-957 A Baltimore MD BLTMMDCHXAX  7421 AT&T - LOCAL 238      
443-957 0 Baltimore MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2025-01-06   
443-957 1 Baltimore MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-03-12   
443-957 2 Baltimore MD BLTMMDCHXAX  7421 AT&T - LOCAL 238      
443-957 3 Baltimore MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2025-01-06   
443-957 4 Baltimore MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2004-05-29   
443-957 5 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2005-09-22   
443-957 6 Baltimore MD BLTMMDCHXAX  7421 AT&T - LOCAL 238      
443-957 7 Baltimore MD BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238   2024-05-25   
443-957 8 Baltimore MD BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238   2024-12-29   
443-957 9 Baltimore MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2005-08-03   
443-960 A Glen Burnie MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-960 0 Glen Burnie MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-12-08   
443-960 1 Glen Burnie MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2016-02-06   
443-960 2 Glen Burnie MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2016-02-06   
443-960 3 Glen Burnie MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2016-04-11   
443-960 4 Glen Burnie MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2016-04-18   
443-960 5 Glen Burnie MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2016-02-05   
443-960 6 Glen Burnie MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-06-03   
443-960 7 Glen Burnie MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-12-31   
443-960 8 Glen Burnie MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-12-31   
443-960 9 Glen Burnie MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2016-04-12   
443-961 A Baltimore MD BLTMMDCHPMD  820C INTRADO COMMUNICATIONS, LLC 238      
443-961 0 Baltimore MD BLTMMDCHPMD  820C INTRADO COMMUNICATIONS, LLC 238   2015-02-13   
443-961 1 Baltimore MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-14   
443-961 2 Baltimore MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-14   
443-961 3 Baltimore MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2015-03-20   
443-961 4 Baltimore MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-14   
443-961 5 Baltimore MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-14   
443-961 6 Baltimore MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-14   
443-961 7 Baltimore MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-14   
443-961 8 Baltimore MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2015-07-02   
443-961 9 Baltimore MD BLTMMDCHPMD  820C INTRADO COMMUNICATIONS, LLC 238   2015-02-13   
443-962 A Glen Burnie MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-962 0 Glen Burnie MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-11-05   

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Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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