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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
443-967 4 North East MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2016-08-22   
443-967 5 North East MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-21   
443-967 6 North East MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-21   
443-967 7 North East MD BLTMMDCHX7X  073H TELNYX LLC 238   2017-04-26   
443-967 8 North East MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-967 9 North East MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2018-12-31   
443-968 A Prince Frederick MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-968 0 Prince Frederick MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-968 1 Prince Frederick MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2003-01-24   
443-968 2 Prince Frederick MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2008-04-08   
443-968 3 Prince Frederick MD PIVLMDPKXFX  829J PAETEC ITEL, LLC 238   2006-07-30   
443-968 4 Prince Frederick MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2008-06-23   
443-968 5 Prince Frederick MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2011-10-07   
443-968 6 Prince Frederick MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2003-01-24   
443-968 7 Prince Frederick MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-08   
443-968 8 Prince Frederick MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2016-05-24   
443-968 9 Prince Frederick MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2011-12-16   
443-969 A Essex MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238   2025-04-01   
443-969 0 Essex MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-969 1 Essex MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-12-01   
443-969 2 Essex MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2006-12-29   
443-969 3 Essex MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-969 4 Essex MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2006-12-29   
443-969 5 Essex MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2021-02-05   
443-969 6 Essex MD   145J TERRA NOVA TELECOM INC. 238   2024-02-15   
443-969 7 Essex MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-10-16   
443-969 8 Essex MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-10-16   
443-969 9 Essex MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-970 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-970 0 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-01-19   
443-970 1 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-01-19   
443-970 2 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-01-19   
443-970 3 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-01-19   
443-970 4 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-01-19   
443-970 5 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-01-20   
443-970 6 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-01-20   
443-970 7 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-01-22   
443-970 8 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-01-22   
443-970 9 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-01-22   
443-971 A Taneytown MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-971 0 Taneytown MD BLTMMDCHX7X  073H TELNYX LLC 238   2017-04-26   
443-971 1 Taneytown MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-04-15   
443-971 2 Taneytown MD BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238   2026-01-04   
443-971 3 Taneytown MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-08   
443-971 4 Taneytown MD   145J TERRA NOVA TELECOM INC. 238   2024-09-13   
443-971 5 Taneytown MD   145J TERRA NOVA TELECOM INC. 238   2025-05-07   
443-971 6 Taneytown MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-07-31   
443-971 7 Taneytown MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2020-06-04   
443-971 8 Taneytown MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-971 9 Taneytown MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   

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Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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