Local Calling Guide

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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
443-587 A Edgewood MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-587 0 Edgewood MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   
443-587 1 Edgewood MD   829J PAETEC ITEL, LLC 238      
443-587 2 Edgewood MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   
443-587 4 Edgewood MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2016-06-17   
443-587 5 Edgewood MD BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238   2024-02-15   
443-587 7 Edgewood MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2016-06-21   
443-587 8 Edgewood MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2019-03-31   
443-587 9 Edgewood MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   
443-588 A Parkville MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-588 0 Parkville MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-588 1 Parkville MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-588 2 Parkville MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-588 3 Parkville MD   829J PAETEC ITEL, LLC 238   2015-09-04   
443-588 4 Parkville MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-588 5 Parkville MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-588 6 Parkville MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-01   
443-588 7 Parkville MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-588 8 Parkville MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2015-04-13   
443-588 9 Parkville MD BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-589 A Cockeysville MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-589 0 Cockeysville MD   829J PAETEC ITEL, LLC 238      
443-589 1 Cockeysville MD   829J PAETEC ITEL, LLC 238      
443-589 2 Cockeysville MD   829J PAETEC ITEL, LLC 238      
443-589 3 Cockeysville MD   829J PAETEC ITEL, LLC 238      
443-589 4 Cockeysville MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2013-06-14   
443-589 5 Cockeysville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2018-10-19   
443-589 6 Cockeysville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-07-15   
443-589 7 Cockeysville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-14   
443-589 8 Cockeysville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-14   
443-589 9 Cockeysville MD   829J PAETEC ITEL, LLC 238      
443-590 A Reisterstown MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-590 0 Reisterstown MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-12-14   
443-590 2 Reisterstown MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-09-10   
443-590 3 Reisterstown MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-01-02   
443-590 5 Reisterstown MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-590 6 Reisterstown MD BLTMMDCH40Z  5562 METROPCS, INC. 238   2016-12-14   
443-590 7 Reisterstown MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-21   
443-590 8 Reisterstown MD BLTQMD012MD  964H BARR TELL USA, INC. 238   2016-12-17   
443-590 9 Reisterstown MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-21   
443-591 A Glen Burnie MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-591 0 Glen Burnie MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2009-07-06   
443-591 1 Glen Burnie MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2009-09-03   
443-591 2 Glen Burnie MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2010-01-13   
443-591 3 Glen Burnie MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2010-01-13   
443-591 4 Glen Burnie MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2010-02-16   
443-591 5 Glen Burnie MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2010-03-16   
443-591 6 Glen Burnie MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2010-06-03   
443-591 7 Glen Burnie MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2010-06-14   
443-591 8 Glen Burnie MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2010-06-14   
443-591 9 Glen Burnie MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2010-06-14   
443-592 A Elkridge MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
443-592 0 Elkridge MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-03-18   
443-592 1 Elkridge MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-01-16   
443-592 2 Elkridge MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-03-18   
443-592 3 Elkridge MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2017-04-18   
443-592 4 Elkridge MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-01-16   
443-592 5 Elkridge MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-592 6 Elkridge MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-592 7 Elkridge MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-592 8 Elkridge MD   515J IP HORIZON LLC 238   2019-04-26   
443-592 9 Elkridge MD   145J TERRA NOVA TELECOM INC. 238   2021-01-27   
443-593 A Elkton MD   829J PAETEC ITEL, LLC 238   2025-04-01   
443-593 0 Elkton MD   515J IP HORIZON LLC 238   2016-01-04   
443-593 1 Elkton MD   829J PAETEC ITEL, LLC 238      
443-593 2 Elkton MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2016-03-01   
443-593 3 Elkton MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2014-09-21   
443-593 4 Elkton MD BLTMMDCH06T  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-23   
443-593 5 Elkton MD BLTMMDCH06T  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-23   
443-593 6 Elkton MD   515J IP HORIZON LLC 238   2015-03-23   
443-593 7 Elkton MD BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-12   
443-593 8 Elkton MD BLTMMDCH40Z  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 238   2014-02-09   
443-593 9 Elkton MD BLTMMDCH40Z  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 238   2014-02-09   
443-594 A Sparrows Point MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-594 2 Sparrows Point MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-02-10   
443-594 3 Sparrows Point MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-594 5 Sparrows Point MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-594 6 Sparrows Point MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-08   
443-594 7 Sparrows Point MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-24   
443-594 8 Sparrows Point MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-24   
443-594 9 Sparrows Point MD   515J IP HORIZON LLC 238   2016-10-14   
443-595 A Sparks-Glencoe MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2025-04-14   
443-595 3 Sparks-Glencoe MD   829J PAETEC ITEL, LLC 238   2006-07-01   
443-595 4 Sparks-Glencoe MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2020-09-28   
443-595 5 Sparks-Glencoe MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2024-12-19   
443-595 6 Sparks-Glencoe MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-02-18   
443-595 7 Sparks-Glencoe MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-05-20   
443-595 8 Sparks-Glencoe MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2012-05-26   
443-595 9 Sparks-Glencoe MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-08   
443-596 A Essex MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
443-596 0 Essex MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-02-25   
443-596 1 Essex MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2020-04-06   
443-596 2 Essex MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   
443-596 3 Essex MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2017-08-16   
443-596 4 Essex MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2017-10-20   
443-596 5 Essex MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2017-10-20   
443-596 6 Essex MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2018-05-27   
443-596 7 Essex MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2018-06-11   
443-596 8 Essex MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2018-09-28   
443-596 9 Essex MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-02-25   

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

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