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
443-447 3 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-04-01   
443-447 4 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-04-01   
443-447 5 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-04-01   
443-447 6 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-04-01   
443-447 7 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-04-01   
443-447 8 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-04-01   
443-447 9 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-04-01   
443-448 A Denton MD SLBRMDSBXHX  107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 242      
443-448 2 Denton MD   7421 AT&T LOCAL 242   2005-05-02   
443-448 3 Denton MD   7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 242   2015-11-02   
443-448 4 Denton MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 242   2006-07-31   
443-448 5 Denton MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 242   2016-10-16   
443-448 6 Denton MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 242   2014-06-25   
443-448 7 Denton MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 242   2015-03-20   
443-448 8 Denton MD   876D ONVOY, LLC - MD 242   2017-04-13   
443-448 9 Denton MD   073H TELNYX LLC 242   2017-09-13   
443-449 A Baltimore MD PIVLMDPKFMD  9170 BROADVIEW NETWORKS, INC. - MD 238   2007-05-19   
443-449 0 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2007-07-22   
443-449 1 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2007-07-22   
443-449 2 Baltimore MD   9170 BROADVIEW NETWORKS, INC. - MD 238   2007-05-19   
443-449 3 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2008-04-08   
443-449 4 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2008-06-16   
443-449 5 Baltimore MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2007-07-27   
443-449 6 Baltimore MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2007-07-27   
443-449 7 Baltimore MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2007-07-27   
443-449 8 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2007-08-17   
443-449 9 Baltimore MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2007-08-17   
443-450 A Pikesville MD BLTMMDSNRS0  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-450 0 Pikesville MD   964H BARR TELL USA, INC. 238   2016-12-17   
443-450 1 Pikesville MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2012-07-29   
443-450 3 Pikesville MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2013-07-17   
443-450 4 Pikesville MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-450 5 Pikesville MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2015-09-14   
443-450 6 Pikesville MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2018-02-01   
443-450 7 Pikesville MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2019-07-05   
443-450 8 Pikesville MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2014-12-13   
443-450 9 Pikesville MD   876D ONVOY, LLC - MD 238   2016-01-14   
443-451 A Baltimore MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238      
443-452 A Baltimore MD CLMAMDJTDS0  2589 US LEC OF MARYLAND, INC. 238   2005-10-30   
443-452 0 Baltimore MD   6664 SPRINT SPECTRUM L.P. 238   2006-02-07   
443-452 1 Baltimore MD   2589 US LEC OF MARYLAND, INC. 238   2005-10-30   
443-452 2 Baltimore MD   6664 SPRINT SPECTRUM L.P. 238   2005-10-31   
443-452 3 Baltimore MD   6664 SPRINT SPECTRUM L.P. 238   2005-10-31   
443-452 4 Baltimore MD   6664 SPRINT SPECTRUM L.P. 238   2005-10-31   
443-452 5 Baltimore MD   6664 SPRINT SPECTRUM L.P. 238   2005-10-31   
443-452 6 Baltimore MD   6664 SPRINT SPECTRUM L.P. 238   2006-02-07   
443-452 7 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-02-03   
443-452 8 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-02-03   
443-452 9 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2006-02-03   
443-453 A Baltimore MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2007-12-03   

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Last updated: Sun, 10 Nov 2019 13:49:34 UTC

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