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
443-576 1 Randallstown MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      
443-576 2 Randallstown MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-14   
443-576 3 Randallstown MD BLTOMDKHDS0  7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238   2008-10-01   
443-576 4 Randallstown MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      
443-576 5 Randallstown MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-14   
443-576 6 Randallstown MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC. - MD 238   2019-06-26   
443-576 7 Randallstown MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC. - MD 238   2019-07-31   
443-576 8 Randallstown MD BLTQMD010MD  082H LOCAL ACCESS LLC - MD 238   2016-01-04   
443-576 9 Randallstown MD BLTMMDCHX7X  073H TELNYX LLC 238   2017-04-25   
443-577 A Glen Burnie MD CLMAMDJTDS0  2589 US LEC OF MARYLAND, INC. 238      
443-577 0 Glen Burnie MD CLMAMDJTDS0  2589 US LEC OF MARYLAND, INC. 238      
443-577 1 Glen Burnie MD CLMAMDJTDS0  2589 US LEC OF MARYLAND, INC. 238      
443-577 2 Glen Burnie MD CLMAMDJTDS0  2589 US LEC OF MARYLAND, INC. 238      
443-577 3 Glen Burnie MD CLMAMDJTDS0  2589 US LEC OF MARYLAND, INC. 238      
443-577 4 Glen Burnie MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2003-02-20   
443-577 5 Glen Burnie MD BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238   2005-01-08   
443-577 6 Glen Burnie MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2006-06-25   
443-577 7 Glen Burnie MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC. - MD 238   2019-05-01   
443-577 8 Glen Burnie MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2016-07-14   
443-577 9 Glen Burnie MD CLMAMDJTDS0  2589 US LEC OF MARYLAND, INC. 238      
443-578 A Cockeysville MD BLTMMDSNDS5  4773 XO MARYLAND, LLC 238      
443-578 0 Cockeysville MD BLTMMDSNDS5  4773 XO MARYLAND, LLC 238      
443-578 1 Cockeysville MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2014-10-21   
443-578 2 Cockeysville MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2015-10-26   
443-578 3 Cockeysville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-02-27   
443-578 4 Cockeysville MD BLTMMDSNDS5  4773 XO MARYLAND, LLC 238      
443-578 5 Cockeysville MD BLTMMDSNDS5  4773 XO MARYLAND, LLC 238      
443-578 6 Cockeysville MD BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2013-08-15   
443-578 7 Cockeysville MD   508J CENTURYLINK COMMUNICATIONS LLC 238   2014-06-25   
443-578 8 Cockeysville MD PIVLMDPKFMD  9170 BROADVIEW NETWORKS, INC. - MD 238   2008-09-26   
443-578 9 Cockeysville MD BLTQMD010MD  082H LOCAL ACCESS LLC - MD 238   2015-03-23   
443-579 A Essex MD CLMAMDJTDS0  2589 US LEC OF MARYLAND, INC. 238      
443-579 0 Essex MD CLMAMDJTDS0  2589 US LEC OF MARYLAND, INC. 238      
443-579 1 Essex MD CLMAMDJTDS0  2589 US LEC OF MARYLAND, INC. 238      
443-579 2 Essex MD CLMAMDJTDS0  2589 US LEC OF MARYLAND, INC. 238      
443-579 3 Essex MD CLMAMDJTDS0  2589 US LEC OF MARYLAND, INC. 238      
443-579 4 Essex MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-06-26   
443-579 5 Essex MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
443-579 6 Essex MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2008-07-17   
443-579 7 Essex MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-10-28   
443-579 8 Essex MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-02-26   
443-579 9 Essex MD CLMAMDJTDS0  2589 US LEC OF MARYLAND, INC. 238      
443-580 A Baltimore MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238      
443-580 0 Baltimore MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-10-27   
443-580 1 Baltimore MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-10-27   
443-580 2 Baltimore MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-10-27   
443-580 3 Baltimore MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-10-27   
443-580 4 Baltimore MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-10-27   
443-580 5 Baltimore MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-10-27   
443-580 6 Baltimore MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-10-27   

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Last updated: Sun, 28 Feb 2021 19:06:05 UTC

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