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
443-488 8 Baltimore MD   4773 XO MARYLAND, LLC 238   2010-10-20   
443-488 9 Baltimore MD   4773 XO MARYLAND, LLC 238   2010-10-20   
443-489 A Chase MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-489 0 Chase MD   4773 XO MARYLAND, LLC 238   2001-11-19   
443-489 1 Chase MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-489 2 Chase MD   876D ONVOY, LLC - MD 238   2016-03-24   
443-489 3 Chase MD   2697 CTC COMMUNICATIONS CORP. - MD 238   2007-01-24   
443-489 4 Chase MD   876D ONVOY, LLC - MD 238   2016-03-24   
443-489 5 Chase MD   7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238   2008-10-01   
443-489 6 Chase MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-02-13   
443-489 7 Chase MD   7575 CENTURYLINK COMMUNICATIONS LLC 238   2014-06-25   
443-489 8 Chase MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-489 9 Chase MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-490 A Edgewood MD BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-490 0 Edgewood MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-490 1 Edgewood MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-490 2 Edgewood MD   5562 METRO PCS, INC. 238   2016-07-28   
443-490 3 Edgewood MD   5562 METRO PCS, INC. 238   2016-08-04   
443-490 4 Edgewood MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-490 5 Edgewood MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-490 6 Edgewood MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2017-10-19   
443-490 7 Edgewood MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2017-10-19   
443-490 8 Edgewood MD   964H BARR TELL USA, INC. 238   2016-12-17   
443-490 9 Edgewood MD   5562 METRO PCS, INC. 238   2017-10-14   
443-491 A Parkton MD BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-491 0 Parkton MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-491 1 Parkton MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-491 2 Parkton MD   5966 LIGHTWAVE COMMUNICATIONS, LLC - MD 238   2005-10-07   
443-491 3 Parkton MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2005-03-10   
443-491 4 Parkton MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-491 5 Parkton MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-491 8 Parkton MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-11-18   
443-491 9 Parkton MD   876D ONVOY, LLC - MD 238   2012-10-07   
443-492 A Elkridge MD BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-492 0 Elkridge MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-492 1 Elkridge MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-492 2 Elkridge MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-02-12   
443-492 3 Elkridge MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-02-12   
443-492 4 Elkridge MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-492 5 Elkridge MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-492 6 Elkridge MD   2697 CTC COMMUNICATIONS CORP. - MD 238   2008-08-01   
443-492 7 Elkridge MD   6664 SPRINT SPECTRUM L.P. 238   2011-11-07   
443-492 8 Elkridge MD   6664 SPRINT SPECTRUM L.P. 238   2011-03-15   
443-492 9 Elkridge MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
443-493 A Delmar MD SLBRMDAZCM2  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2009-05-07   
443-493 0 Delmar MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2009-05-07   
443-493 1 Delmar MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2011-10-28   
443-493 2 Delmar MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2011-10-28   
443-493 3 Delmar MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 242   2011-10-28   
443-493 4 Delmar MD   2593 CORE COMMUNICATIONS, INC. - MD 242   2018-06-17   

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

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