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
443-332 4 Crofton MD CLMAMDJTDS0  2589 US LEC OF MARYLAND, INC. 238   2002-07-12   
443-332 6 Crofton MD BLTMMDCHW29  4716 PAETEC COMMUNICATIONS, INC. - MD 238   2006-03-28   
443-332 8 Crofton MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2020-11-29   
443-333 A Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-333 0 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-06-02   
443-333 1 Annapolis MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-19   
443-333 2 Annapolis MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238   2011-11-09   
443-333 3 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2010-04-15   
443-333 4 Annapolis MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2011-11-09   
443-333 5 Annapolis MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238   2010-07-18   
443-333 6 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-06-23   
443-333 7 Annapolis MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-06-23   
443-333 8 Annapolis MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-10-28   
443-333 9 Annapolis MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-11-28   
443-334 A Pikesville MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      
443-334 0 Pikesville MD BLTMMD91DS1  2593 CORE COMMUNICATIONS, INC. - MD 238   2004-04-02   
443-334 1 Pikesville MD BLTMMDSN5MD  4773 XO MARYLAND, LLC 238      
443-334 2 Pikesville MD PIVLMDPKDS1  9212 VERIZON MARYLAND, INC. 238   2003-10-30   
443-334 3 Pikesville MD PIVLMDPKDS1  9212 VERIZON MARYLAND, INC. 238   2003-10-30   
443-334 4 Pikesville MD BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238   2005-03-10   
443-334 5 Pikesville MD BLTMMDCHXFX  318J COMCAST IP PHONE LLC 238   2013-10-30   
443-334 6 Pikesville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2016-09-08   
443-334 7 Pikesville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2016-10-24   
443-334 8 Pikesville MD BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2007-12-04   
443-334 9 Pikesville MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC. - MD 238   2019-04-22   
443-335 A Brooklyn Park-Linthicum MD BLTMMDSNDS5  4773 XO MARYLAND, LLC 238      
443-335 0 Brooklyn Park-Linthicum MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   
443-335 1 Brooklyn Park-Linthicum MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   
443-335 2 Brooklyn Park-Linthicum MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2018-11-18   
443-335 3 Brooklyn Park-Linthicum MD BLTMMDSNDS5  4773 XO MARYLAND, LLC 238      
443-335 4 Brooklyn Park-Linthicum MD BLTMMDCHFMD  5562 METRO PCS, INC. 238   2019-10-13   
443-335 5 Brooklyn Park-Linthicum MD BLTMMDCHFMD  5562 METRO PCS, INC. 238   2020-01-24   
443-335 6 Brooklyn Park-Linthicum MD BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2020-10-26   
443-335 7 Brooklyn Park-Linthicum MD BLTMMDCHXMX  506J TWILIO INTERNATIONAL INC 238   2020-12-26   
443-335 8 Brooklyn Park-Linthicum MD   876D ONVOY, LLC - MD 238   2021-03-04   
443-335 9 Brooklyn Park-Linthicum MD   876D ONVOY, LLC - MD 238   2021-03-04   
443-336 A Annapolis MD EKRGMD92MMD  6664 SPRINT SPECTRUM L.P. 238      
443-337 A Sparrows Point MD BLTMMDCHYMD  2593 CORE COMMUNICATIONS, INC. - MD 238      
443-337 1 Sparrows Point MD BLTMMDCHFMD  5562 METRO PCS, INC. 238   2019-10-13   
443-337 2 Sparrows Point MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2019-03-29   
443-337 3 Sparrows Point MD BLTMMDCHFMD  5562 METRO PCS, INC. 238   2017-10-01   
443-337 4 Sparrows Point MD BLTMMDCHFMD  5562 METRO PCS, INC. 238   2018-01-06   
443-337 5 Sparrows Point MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   
443-337 6 Sparrows Point MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   
443-337 7 Sparrows Point MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2018-06-16   
443-337 8 Sparrows Point MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC. - MD 238   2019-03-29   
443-337 9 Sparrows Point MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC. - MD 238   2019-07-31   
443-338 A Sparks-Glencoe MD BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238      
443-338 0 Sparks-Glencoe MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-06-07   
443-338 1 Sparks-Glencoe MD BLTQMD010MD  082H LOCAL ACCESS LLC - MD 238   2015-03-21   

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

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