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
443-327 7 Aberdeen MD BLTMMDCHXFX  318J COMCAST IP PHONE LLC 236   2006-09-18   
443-327 8 Aberdeen MD BLTMMDCHXFX  318J COMCAST IP PHONE LLC 236   2005-07-25   
443-327 9 Aberdeen MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 236   2008-12-11   
443-328 A Sykesville MD BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238      
443-328 1 Sykesville MD BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238      
443-328 2 Sykesville MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC. - MD 238   2019-05-01   
443-328 3 Sykesville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-22   
443-328 4 Sykesville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-22   
443-328 5 Sykesville MD CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2015-10-16   
443-328 6 Sykesville MD BLTMMDCHXFX  318J COMCAST IP PHONE LLC 238   2014-01-26   
443-328 7 Sykesville MD   508J CENTURYLINK COMMUNICATIONS LLC 238   2014-06-25   
443-328 8 Sykesville MD BLTMMDCHLMD  082H LOCAL ACCESS LLC - MD 238   2016-05-31   
443-328 9 Sykesville MD BLTQMD010MD  082H LOCAL ACCESS LLC - MD 238   2015-03-21   
443-329 A Waterloo (Washington DC LATA) MD WASJDCDCDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 236      
443-329 0 Waterloo (Washington DC LATA) MD WASJDCDCDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 236      
443-329 1 Waterloo (Washington DC LATA) MD WASJDCDCDS0  6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 236      
443-329 2 Waterloo (Washington DC LATA) MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-02-20   
443-329 3 Waterloo (Washington DC LATA) MD WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236   2009-01-15   
443-329 4 Waterloo (Washington DC LATA) MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
443-329 5 Waterloo (Washington DC LATA) MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-06-20   
443-329 6 Waterloo (Washington DC LATA) MD WASHDCSWFMD  2593 CORE COMMUNICATIONS, INC. - MD 236   2019-04-30   
443-329 7 Waterloo (Washington DC LATA) MD WASHDCSWFMD  2593 CORE COMMUNICATIONS, INC. - MD 236   2019-04-30   
443-329 8 Waterloo (Washington DC LATA) MD WASHDC127MD  073H TELNYX LLC 236   2017-04-27   
443-329 9 Waterloo (Washington DC LATA) MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-06-20   
443-330 A Cockeysville MD HNVAMDBHRS0  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-330 0 Cockeysville MD HNVAMDBHRS0  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-330 1 Cockeysville MD HNVAMDBHRS0  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-330 2 Cockeysville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-22   
443-330 3 Cockeysville MD BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238   2005-03-10   
443-330 4 Cockeysville MD HNVAMDBHRS0  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238   2004-09-05   
443-330 5 Cockeysville MD BLTMMDCHXFX  318J COMCAST IP PHONE LLC 238   2006-10-22   
443-330 6 Cockeysville MD BLTMMDSNDS5  4773 XO MARYLAND, LLC 238   2011-04-13   
443-330 7 Cockeysville MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2013-09-08   
443-330 8 Cockeysville MD MANRMDMNRS0  9212 VERIZON MARYLAND, INC. 238   2006-10-16   
443-330 9 Cockeysville MD HNVAMDBHRS0  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-331 A Taneytown MD BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238      
443-331 0 Taneytown MD BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC. - MD 238   2019-07-31   
443-331 1 Taneytown MD BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238      
443-331 2 Taneytown MD   145J TERRA NOVA TELECOM INC. 238   2021-01-28   
443-331 3 Taneytown MD BLTMMDCHXFX  318J COMCAST IP PHONE LLC 238   2014-11-25   
443-331 4 Taneytown MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-21   
443-331 5 Taneytown MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-21   
443-331 6 Taneytown MD BLTMMDCHXMX  506J TWILIO INTERNATIONAL INC 238   2020-12-26   
443-331 7 Taneytown MD   508J CENTURYLINK COMMUNICATIONS LLC 238   2014-06-25   
443-331 8 Taneytown MD BLTMMDCH25Z  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238   2015-07-17   
443-331 9 Taneytown MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-04-08   
443-332 A Crofton MD HNVAMDBHRS0  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-332 0 Crofton MD HNVAMDBHRS0  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-332 1 Crofton MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2020-09-12   
443-332 3 Crofton MD   145J TERRA NOVA TELECOM INC. 238   2021-01-27   

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

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