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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
443-648 1 Essex MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2019-08-23   
443-648 2 Essex MD   829J PAETEC ITEL, LLC 238   2007-06-15   
443-648 3 Essex MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-07-02   
443-648 4 Essex MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-648 5 Essex MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-02-13   
443-648 6 Essex MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2015-04-12   
443-648 7 Essex MD BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-25   
443-648 8 Essex MD   515J IP HORIZON LLC 238   2013-09-06   
443-648 9 Essex MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-07   
443-649 A Sparrows Point MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-649 0 Sparrows Point MD   829J PAETEC ITEL, LLC 238      
443-649 1 Sparrows Point MD   829J PAETEC ITEL, LLC 238      
443-649 2 Sparrows Point MD   829J PAETEC ITEL, LLC 238      
443-649 3 Sparrows Point MD   829J PAETEC ITEL, LLC 238      
443-649 4 Sparrows Point MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2016-11-25   
443-649 5 Sparrows Point MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2014-11-06   
443-649 6 Sparrows Point MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-07-31   
443-649 7 Sparrows Point MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2018-04-16   
443-649 8 Sparrows Point MD   515J IP HORIZON LLC 238   2016-01-04   
443-649 9 Sparrows Point MD   829J PAETEC ITEL, LLC 238      
443-650 A Reisterstown MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-650 0 Reisterstown MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-650 1 Reisterstown MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-650 2 Reisterstown MD   515J IP HORIZON LLC 238   2016-10-14   
443-650 3 Reisterstown MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2016-09-08   
443-650 4 Reisterstown MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2020-09-06   
443-650 5 Reisterstown MD   829J PAETEC ITEL, LLC 238   2003-03-04   
443-650 6 Reisterstown MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-01   
443-650 7 Reisterstown MD BLTMMDCHX7X  073H TELNYX LLC 238   2017-04-25   
443-650 8 Reisterstown MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
443-650 9 Reisterstown MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-651 A Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-651 0 Baltimore MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2011-09-05   
443-651 1 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-09-07   
443-651 2 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-09-07   
443-651 3 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-09-07   
443-651 4 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-09-07   
443-651 5 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-09-07   
443-651 6 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-09-07   
443-651 7 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-09-07   
443-651 8 Baltimore MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-09-07   
443-651 9 Baltimore MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2012-05-20   
443-652 A Towson MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-652 0 Towson MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2016-07-14   
443-652 1 Towson MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-11-04   
443-652 2 Towson MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2007-06-16   
443-652 3 Towson MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2016-05-19   
443-652 4 Towson MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2016-07-21   
443-652 5 Towson MD   829J PAETEC ITEL, LLC 238   2016-07-01   
443-652 6 Towson MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2016-07-22   
443-652 7 Towson MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2018-09-20   
443-652 8 Towson MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2018-10-14   
443-652 9 Towson MD   515J IP HORIZON LLC 238   2016-10-14   
443-653 A Parkville MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-653 0 Parkville MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-653 1 Parkville MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-653 2 Parkville MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-653 3 Parkville MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2014-09-21   
443-653 4 Parkville MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2013-12-27   
443-653 5 Parkville MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2008-04-21   
443-653 6 Parkville MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-653 7 Parkville MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2014-12-13   
443-653 8 Parkville MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2014-12-13   
443-653 9 Parkville MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-654 A Waterloo (Washington DC LATA) MD ODTNMDAUDS0  9212 VERIZON MARYLAND, INC. 236      
443-654 0 Waterloo (Washington DC LATA) MD   9212 VERIZON MARYLAND, INC. 236   2008-09-27   
443-654 1 Waterloo (Washington DC LATA) MD   9212 VERIZON MARYLAND, INC. 236   2008-09-27   
443-654 2 Waterloo (Washington DC LATA) MD   9212 VERIZON MARYLAND, INC. 236   2008-09-27   
443-654 3 Waterloo (Washington DC LATA) MD   9212 VERIZON MARYLAND, INC. 236   2008-09-27   
443-654 4 Waterloo (Washington DC LATA) MD   9212 VERIZON MARYLAND, INC. 236   2008-09-27   
443-654 5 Waterloo (Washington DC LATA) MD   9212 VERIZON MARYLAND, INC. 236   2008-09-27   
443-654 6 Waterloo (Washington DC LATA) MD   9212 VERIZON MARYLAND, INC. 236   2008-09-27   
443-654 7 Waterloo (Washington DC LATA) MD   9212 VERIZON MARYLAND, INC. 236   2008-09-27   
443-654 8 Waterloo (Washington DC LATA) MD   9212 VERIZON MARYLAND, INC. 236   2008-09-27   
443-654 9 Waterloo (Washington DC LATA) MD   9212 VERIZON MARYLAND, INC. 236   2008-09-27   
443-655 A Bel Air MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-655 0 Bel Air MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-655 1 Bel Air MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-655 2 Bel Air MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-655 3 Bel Air MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-655 4 Bel Air MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-655 5 Bel Air MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-655 6 Bel Air MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-655 7 Bel Air MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-655 8 Bel Air MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2011-03-20   
443-655 9 Bel Air MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2011-03-20   
443-656 A Columbia MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-656 0 Columbia MD   829J PAETEC ITEL, LLC 238      
443-656 1 Columbia MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-05-22   
443-656 2 Columbia MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-01-08   
443-656 3 Columbia MD   829J PAETEC ITEL, LLC 238      
443-656 4 Columbia MD   829J PAETEC ITEL, LLC 238      
443-656 5 Columbia MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-01-08   
443-656 6 Columbia MD   829J PAETEC ITEL, LLC 238      
443-656 7 Columbia MD   829J PAETEC ITEL, LLC 238      
443-656 8 Columbia MD   829J PAETEC ITEL, LLC 238      
443-656 9 Columbia MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-07-11   
443-657 A Randallstown MD BLTMMDSNNMD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238      
443-657 0 Randallstown MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2014-11-08   
443-657 1 Randallstown MD   515J IP HORIZON LLC 238   2016-10-14   

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Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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