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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
443-340 A Westminster MD WDLWMDEMCM3  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
443-341 A Catonsville MD BLTMMDSNRS0  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-341 0 Catonsville MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-341 1 Catonsville MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-341 2 Catonsville MD   4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2004-02-14   
443-341 3 Catonsville MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2004-03-29   
443-341 4 Catonsville MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2003-02-20   
443-341 5 Catonsville MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2004-12-27   
443-341 6 Catonsville MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2005-03-10   
443-341 7 Catonsville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2005-03-19   
443-341 8 Catonsville MD   1958 ATX TELECOMMUNICATIONS SERVICES, LTD 238   2004-03-27   
443-341 9 Catonsville MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-342 A Solomons MD   2697 CTC COMMUNICATIONS CORP. - MD 238      
443-342 1 Solomons MD   2697 CTC COMMUNICATIONS CORP. - MD 238      
443-342 2 Solomons MD   876D ONVOY, LLC - MD 238   2016-04-04   
443-342 3 Solomons MD   876D ONVOY, LLC - MD 238   2014-09-13   
443-342 4 Solomons MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-01-04   
443-342 5 Solomons MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-02-13   
443-342 6 Solomons MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-07-06   
443-342 7 Solomons MD   7575 CENTURYLINK COMMUNICATIONS LLC 238   2014-06-25   
443-342 8 Solomons MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2015-06-16   
443-342 9 Solomons MD   876D ONVOY, LLC - MD 238   2016-04-04   
443-343 A Millersville MD BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-343 0 Millersville MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-04-07   
443-343 1 Millersville MD   2589 US LEC OF MARYLAND, INC. 238   2003-07-12   
443-343 2 Millersville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-02-13   
443-343 3 Millersville MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   
443-343 5 Millersville MD   4716 PAETEC COMMUNICATIONS, INC. - MD 238   2006-05-20   
443-343 7 Millersville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2018-07-28   
443-343 8 Millersville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-01-09   
443-343 9 Millersville MD   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-344 A Severna Park MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC. - MD 238      
443-345 A Aberdeen MD BLTMMDSNRS0  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
443-345 0 Aberdeen MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-02-22   
443-345 1 Aberdeen MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-05-14   
443-345 2 Aberdeen MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-05-14   
443-345 3 Aberdeen MD   4773 XO MARYLAND, LLC 236   2010-03-13   
443-345 4 Aberdeen MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
443-345 5 Aberdeen MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2010-11-01   
443-345 6 Aberdeen MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2011-10-06   
443-345 7 Aberdeen MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2010-07-11   
443-345 8 Aberdeen MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-09-04   
443-345 9 Aberdeen MD   071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-10-28   
443-346 A Severna Park MD   2593 CORE COMMUNICATIONS, INC. - MD 238      
443-346 1 Severna Park MD   6664 SPRINT SPECTRUM L.P. 238   2020-01-13   
443-346 2 Severna Park MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2019-03-29   
443-346 3 Severna Park MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2017-11-24   
443-346 4 Severna Park MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2017-11-24   
443-346 5 Severna Park MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-10-23   
443-346 6 Severna Park MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2019-03-29   

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Last updated: Wed, 05 Feb 2020 02:15:44 UTC

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