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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
443-600 9 Essex MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-601 A Fallston MD PIVLMDPKXFX  829J PAETEC ITEL, LLC 238   2025-04-01   
443-601 0 Fallston MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-07   
443-601 1 Fallston MD PIVLMDPKXFX  829J PAETEC ITEL, LLC 238      
443-601 2 Fallston MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-07   
443-601 3 Fallston MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-23   
443-601 4 Fallston MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-23   
443-601 5 Fallston MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2017-08-07   
443-601 6 Fallston MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-07   
443-601 7 Fallston MD BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-12   
443-601 8 Fallston MD BLTMMDCHX7X  073H TELNYX LLC 238   2017-04-25   
443-601 9 Fallston MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-04-26   
443-602 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-602 0 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-04-08   
443-602 1 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-07-02   
443-602 2 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-07-02   
443-602 3 Baltimore MD PIVLMDPKXFX  829J PAETEC ITEL, LLC 238   2007-05-01   
443-602 4 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-07-02   
443-602 5 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-08-02   
443-602 6 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2007-08-02   
443-602 7 Baltimore MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2008-06-09   
443-602 8 Baltimore MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2007-09-11   
443-602 9 Baltimore MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2007-12-04   
443-603 A Annapolis MD PIVLMDPKXEX  829J PAETEC ITEL, LLC 238   2025-04-01   
443-603 0 Annapolis MD PIVLMDPKXEX  829J PAETEC ITEL, LLC 238      
443-603 1 Annapolis MD PIVLMDPKXEX  829J PAETEC ITEL, LLC 238      
443-603 2 Annapolis MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-05-01   
443-603 3 Annapolis MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-05-01   
443-603 4 Annapolis MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2006-05-12   
443-603 5 Annapolis MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2006-05-12   
443-603 6 Annapolis MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2006-05-12   
443-603 7 Annapolis MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2006-05-12   
443-603 8 Annapolis MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2006-05-12   
443-603 9 Annapolis MD PIVLMDPKXEX  829J PAETEC ITEL, LLC 238      
443-604 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-605 A Westminster MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238   2025-04-01   
443-605 0 Westminster MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-605 1 Westminster MD PIVLMDPKXGX  829J PAETEC ITEL, LLC 238      
443-605 2 Westminster MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2005-07-02   
443-605 3 Westminster MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-02-03   
443-605 4 Westminster MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-04-01   
443-605 5 Westminster MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2005-05-02   
443-605 6 Westminster MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2005-05-02   
443-605 7 Westminster MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-08-07   
443-605 8 Westminster MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-12-04   
443-605 9 Westminster MD CLMAMDORAMD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2003-12-04   
443-606 A Fork MD PIVLMDPKXFX  829J PAETEC ITEL, LLC 238   2025-04-01   
443-606 0 Fork MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2014-10-18   
443-606 1 Fork MD PIVLMDPKXFX  829J PAETEC ITEL, LLC 238      
443-606 2 Fork MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2014-10-18   

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

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