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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
443-766 4 Columbia MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2015-10-01   
443-766 5 Columbia MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2015-09-03   
443-766 6 Columbia MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2015-11-03   
443-766 7 Columbia MD PIVLMDPKXEX  829J PAETEC ITEL, LLC 238   2006-07-15   
443-766 8 Columbia MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2015-10-30   
443-766 9 Columbia MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2008-01-14   
443-767 A Worthington MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238   2025-04-01   
443-767 0 Worthington MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-767 1 Worthington MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2020-06-11   
443-767 2 Worthington MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-04-02   
443-767 3 Worthington MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2020-06-11   
443-767 4 Worthington MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-08   
443-767 6 Worthington MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-29   
443-767 7 Worthington MD PIVLMDPKXEX  829J PAETEC ITEL, LLC 238   2008-09-08   
443-767 8 Worthington MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-767 9 Worthington MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-768 A Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-768 0 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-768 1 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-768 2 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-768 3 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-768 4 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-768 5 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-768 6 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-768 7 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-768 8 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-768 9 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-769 A Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-769 0 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2010-08-01   
443-769 1 Baltimore MD PIVLMDPKXEX  829J PAETEC ITEL, LLC 238   2008-12-21   
443-769 2 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2010-08-01   
443-769 3 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2010-08-01   
443-769 4 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2010-07-16   
443-769 5 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2010-07-16   
443-769 6 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2010-07-16   
443-769 7 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2010-07-16   
443-769 8 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2010-07-16   
443-769 9 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2008-11-23   
443-770 A Armiger-Gibson Island MD ARMGMDARDS0  9212 VERIZON MARYLAND, INC. 238      
443-770 0 Armiger-Gibson Island MD ARMGMDARDS0  9212 VERIZON MARYLAND, INC. 238      
443-770 1 Armiger-Gibson Island MD PIVLMDPKXEX  829J PAETEC ITEL, LLC 238   2004-01-10   
443-770 2 Armiger-Gibson Island MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-06-02   
443-770 3 Armiger-Gibson Island MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-06-02   
443-770 4 Armiger-Gibson Island MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2013-10-11   
443-770 5 Armiger-Gibson Island MD ARMGMDARDS0  9212 VERIZON MARYLAND, INC. 238   2005-12-14   
443-770 6 Armiger-Gibson Island MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-09-05   
443-770 7 Armiger-Gibson Island MD BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-25   
443-770 8 Armiger-Gibson Island MD ARMGMDARDS0  9212 VERIZON MARYLAND, INC. 238      
443-770 9 Armiger-Gibson Island MD ARMGMDARDS0  9212 VERIZON MARYLAND, INC. 238      
443-771 A Prince Frederick MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-771 0 Prince Frederick MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2010-11-06   
443-771 1 Prince Frederick MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2012-03-13   
443-771 2 Prince Frederick MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-06-16   
443-771 3 Prince Frederick MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-06-16   
443-771 4 Prince Frederick MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-06-16   
443-771 5 Prince Frederick MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-06-16   
443-771 6 Prince Frederick MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-06-16   
443-771 7 Prince Frederick MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2015-09-05   
443-771 8 Prince Frederick MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-771 9 Prince Frederick MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-772 A Essex MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238   2025-04-01   
443-772 0 Essex MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-772 1 Essex MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-772 2 Essex MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-772 3 Essex MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-772 4 Essex MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-772 5 Essex MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2020-08-23   
443-772 6 Essex MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2020-08-23   
443-772 7 Essex MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-772 8 Essex MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-772 9 Essex MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-773 A Brooklyn Park-Linthicum MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-773 0 Brooklyn Park-Linthicum MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-773 1 Brooklyn Park-Linthicum MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-773 2 Brooklyn Park-Linthicum MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-05-14   
443-773 3 Brooklyn Park-Linthicum MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-773 4 Brooklyn Park-Linthicum MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-773 5 Brooklyn Park-Linthicum MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-773 6 Brooklyn Park-Linthicum MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-773 7 Brooklyn Park-Linthicum MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-06-26   
443-773 8 Brooklyn Park-Linthicum MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-773 9 Brooklyn Park-Linthicum MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-774 A Columbia MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-774 0 Columbia MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-04-27   
443-774 1 Columbia MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-04-27   
443-774 2 Columbia MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-28   
443-774 3 Columbia MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-28   
443-774 4 Columbia MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2019-10-07   
443-774 5 Columbia MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2019-07-20   
443-774 6 Columbia MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-28   
443-774 7 Columbia MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-28   
443-774 8 Columbia MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2019-04-19   
443-774 9 Columbia MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2019-01-19   
443-775 A Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-775 0 Annapolis MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2016-05-06   
443-775 1 Annapolis MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2014-11-25   
443-775 2 Annapolis MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-12-31   
443-775 3 Annapolis MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-12-31   
443-775 4 Annapolis MD BLTQMD012MD  964H BARR TELL USA, INC. 238   2016-12-17   
443-775 5 Annapolis MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2015-11-18   

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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