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
443-504 1 Fallston MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2004-03-29   
443-504 2 Fallston MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2004-05-02   
443-504 3 Fallston MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2004-07-02   
443-504 4 Fallston MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2004-01-19   
443-504 5 Fallston MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2004-02-28   
443-504 6 Fallston MD   8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238   2015-06-14   
443-504 7 Fallston MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2005-04-01   
443-504 8 Fallston MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2004-08-02   
443-504 9 Fallston MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2004-09-29   
443-505 A Essex MD BLTOMDXIDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-505 0 Essex MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-505 1 Essex MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-505 2 Essex MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2011-12-24   
443-505 3 Essex MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2014-03-20   
443-505 4 Essex MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 238      
443-505 5 Essex MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-505 6 Essex MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2018-10-18   
443-505 7 Essex MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-05-16   
443-505 8 Essex MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2014-09-21   
443-505 9 Essex MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC DBA T-MOBILE USA 238   2019-10-07   
443-506 A Baltimore MD   6664 SPRINT SPECTRUM L.P. 238      
443-507 A Hampstead MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-507 0 Hampstead MD   9212 VERIZON MARYLAND, INC. 238   2003-10-17   
443-507 1 Hampstead MD   2589 US LEC OF MARYLAND, INC. 238   2003-07-20   
443-507 2 Hampstead MD   8864 BROADWING COMMUNICATIONS. LLC - MD 238   2003-06-17   
443-507 3 Hampstead MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2004-03-29   
443-507 4 Hampstead MD   2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238   2016-01-31   
443-507 5 Hampstead MD   9212 VERIZON MARYLAND, INC. 238   2005-05-27   
443-507 6 Hampstead MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2009-06-13   
443-507 7 Hampstead MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   
443-507 8 Hampstead MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-07-02   
443-507 9 Hampstead MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-508 A Hampstead MD HNVAMDBHRS0  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-508 0 Hampstead MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-508 1 Hampstead MD   6664 SPRINT SPECTRUM L.P. 238   2004-12-27   
443-508 2 Hampstead MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2013-02-17   
443-508 3 Hampstead MD   7228 MCI WORLDCOM COMMUNICATIONS, INC. - MD 238   2009-01-05   
443-508 4 Hampstead MD   9212 VERIZON MARYLAND, INC. 238   2004-10-07   
443-508 5 Hampstead MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-508 7 Hampstead MD   876D ONVOY, LLC - MD 238   2012-10-07   
443-508 8 Hampstead MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-25   
443-508 9 Hampstead MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-509 A Baltimore MD CTVLMDBACM3  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2009-04-11   
443-509 0 Baltimore MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2009-04-11   
443-509 1 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-10-21   
443-509 2 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-05-19   
443-509 3 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-05-19   
443-509 4 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-05-19   
443-509 5 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-05-19   
443-509 6 Baltimore MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-11-08   

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Last updated: Sun, 31 May 2020 11:59:01 UTC

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