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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
443-898 2 Pikesville MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2008-03-04   
443-898 3 Pikesville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2015-08-28   
443-898 4 Pikesville MD   876D ONVOY, LLC - MD 238   2014-09-06   
443-898 5 Pikesville MD   551G NUSO, LLC 238   2016-08-31   
443-898 6 Pikesville MD   318J COMCAST IP PHONE, LLC 238   2016-02-05   
443-898 7 Pikesville MD   551G NUSO, LLC 238   2016-08-31   
443-898 8 Pikesville MD   318J COMCAST IP PHONE, LLC 238   2015-01-09   
443-898 9 Pikesville MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-12-08   
443-899 A Waterloo MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-899 0 Waterloo MD   624H ONVOY SPECTRUM, LLC 238   2021-11-26   
443-899 1 Waterloo MD   876D ONVOY, LLC - MD 238   2021-05-21   
443-899 2 Waterloo MD   624H ONVOY SPECTRUM, LLC 238   2021-06-26   
443-899 3 Waterloo MD   876D ONVOY, LLC - MD 238   2021-07-12   
443-899 4 Waterloo MD   073H TELNYX LLC 238   2017-04-26   
443-899 5 Waterloo MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-02   
443-899 6 Waterloo MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-02   
443-899 7 Waterloo MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-899 8 Waterloo MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-899 9 Waterloo MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-900 A Towson MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-900 0 Towson MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-07-21   
443-900 1 Towson MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-07-21   
443-900 2 Towson MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-07-21   
443-900 3 Towson MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-07-21   
443-900 4 Towson MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-07-21   
443-900 5 Towson MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-07-21   
443-900 6 Towson MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-09-01   
443-900 7 Towson MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-09-01   
443-900 8 Towson MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-09-01   
443-900 9 Towson MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-11-01   
443-901 A Towson MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-901 0 Towson MD   829J PAETEC ITEL, LLC 238      
443-901 1 Towson MD   829J PAETEC ITEL, LLC 238      
443-901 2 Towson MD   829J PAETEC ITEL, LLC 238      
443-901 3 Towson MD   876D ONVOY, LLC - MD 238   2020-08-09   
443-901 4 Towson MD   876D ONVOY, LLC - MD 238   2020-08-09   
443-901 5 Towson MD   876D ONVOY, LLC - MD 238   2020-08-09   
443-901 6 Towson MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2020-06-30   
443-901 7 Towson MD   829J PAETEC ITEL, LLC 238      
443-901 8 Towson MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2021-05-10   
443-901 9 Towson MD   829J PAETEC ITEL, LLC 238      
443-902 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-902 0 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-03-10   
443-902 1 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-03-10   
443-902 2 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-03-10   
443-902 3 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-03-10   
443-902 4 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-03-10   
443-902 5 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-11   
443-902 6 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-11   
443-902 7 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-11   
443-902 8 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-11   
443-902 9 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-03-11   
443-903 A Bel Air MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-903 0 Bel Air MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-11-06   
443-903 1 Bel Air MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2014-08-01   
443-903 2 Bel Air MD   876D ONVOY, LLC - MD 238   2012-10-07   
443-903 3 Bel Air MD   876D ONVOY, LLC - MD 238   2016-01-18   
443-903 4 Bel Air MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2015-08-01   
443-903 5 Bel Air MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2014-03-22   
443-903 6 Bel Air MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2011-11-28   
443-903 7 Bel Air MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2011-11-28   
443-903 8 Bel Air MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2014-04-01   
443-903 9 Bel Air MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-05-22   
443-904 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-904 0 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-904 1 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-904 2 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-904 3 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-904 4 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-904 5 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-904 6 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-904 7 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2003-11-19   
443-904 8 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2004-10-03   
443-904 9 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2004-10-03   
443-905 A Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-905 0 Annapolis MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2011-11-28   
443-905 1 Annapolis MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2014-01-03   
443-905 2 Annapolis MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2013-12-16   
443-905 3 Annapolis MD   7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238   2013-09-21   
443-905 4 Annapolis MD   7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238   2013-10-04   
443-905 5 Annapolis MD   7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238   2013-10-04   
443-905 6 Annapolis MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2013-11-22   
443-905 7 Annapolis MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2013-11-22   
443-905 8 Annapolis MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2024-06-27   
443-905 9 Annapolis MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2014-02-07   
443-906 A Severna Park MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238      
443-906 0 Severna Park MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2014-02-16   
443-906 1 Severna Park MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2014-02-16   
443-906 2 Severna Park MD   318J COMCAST IP PHONE, LLC 238   2013-10-14   
443-906 3 Severna Park MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2014-02-16   
443-906 4 Severna Park MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2012-11-11   
443-906 5 Severna Park MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2012-11-11   
443-906 6 Severna Park MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2012-11-11   
443-906 7 Severna Park MD   508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-25   
443-906 8 Severna Park MD   515J IP HORIZON LLC 238   2016-05-31   
443-906 9 Severna Park MD   515J IP HORIZON LLC 238   2015-03-21   
443-907 A Elkton MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-907 0 Elkton MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-11-02   
443-907 1 Elkton MD   829J PAETEC ITEL, LLC 238   2004-02-05   
443-907 2 Elkton MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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