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
443-329 1 Waterloo (Washington DC LATA) MD   6050 GLOBAL CROSSING LOCAL SERVICES, INC.-MD 236      
443-329 2 Waterloo (Washington DC LATA) MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-02-20   
443-329 3 Waterloo (Washington DC LATA) MD   281E YMAX COMMUNICATIONS CORP. - MD 236   2009-01-15   
443-329 4 Waterloo (Washington DC LATA) MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
443-329 6 Waterloo (Washington DC LATA) MD   2593 CORE COMMUNICATIONS, INC. - MD 236   2019-04-30   
443-329 7 Waterloo (Washington DC LATA) MD   2593 CORE COMMUNICATIONS, INC. - MD 236   2019-04-30   
443-329 8 Waterloo (Washington DC LATA) MD   073H TELNYX LLC 236   2017-04-27   
443-330 A Cockeysville MD HNVAMDBHRS0  3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-330 0 Cockeysville MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-330 1 Cockeysville MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-330 2 Cockeysville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-22   
443-330 3 Cockeysville MD   2697 CTC COMMUNICATIONS CORP. - MD 238   2005-03-10   
443-330 4 Cockeysville MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238   2004-09-05   
443-330 5 Cockeysville MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2006-10-22   
443-330 6 Cockeysville MD   4773 XO MARYLAND, LLC 238   2011-04-13   
443-330 7 Cockeysville MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2013-09-08   
443-330 8 Cockeysville MD   9212 VERIZON MARYLAND, INC. 238   2006-10-16   
443-330 9 Cockeysville MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-331 A Taneytown MD   2697 CTC COMMUNICATIONS CORP. - MD 238      
443-331 0 Taneytown MD   2593 CORE COMMUNICATIONS, INC. - MD 238   2019-07-31   
443-331 1 Taneytown MD   2697 CTC COMMUNICATIONS CORP. - MD 238      
443-331 3 Taneytown MD   107D COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD 238   2014-11-25   
443-331 4 Taneytown MD   876D ONVOY, LLC - MD 238   2016-03-21   
443-331 5 Taneytown MD   876D ONVOY, LLC - MD 238   2016-03-21   
443-331 7 Taneytown MD   7575 CENTURYLINK COMMUNICATIONS LLC 238   2014-06-25   
443-331 8 Taneytown MD   8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238   2015-07-17   
443-331 9 Taneytown MD   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   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-332 1 Crofton MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-332 2 Crofton MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-332 3 Crofton MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-332 4 Crofton MD   2589 US LEC OF MARYLAND, INC. 238   2002-07-12   
443-332 5 Crofton MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-332 6 Crofton MD   4716 PAETEC COMMUNICATIONS, INC. - MD 238   2006-03-28   
443-332 7 Crofton MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-332 8 Crofton MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-332 9 Crofton MD   3910 CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD 238      
443-333 A Annapolis MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
443-333 0 Annapolis MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-06-02   
443-333 1 Annapolis MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-19   
443-333 2 Annapolis MD   6664 SPRINT SPECTRUM L.P. 238   2011-11-09   
443-333 3 Annapolis MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2010-04-15   
443-333 4 Annapolis MD   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2011-11-09   
443-333 5 Annapolis MD   4773 XO MARYLAND, LLC 238   2010-07-18   
443-333 6 Annapolis MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-06-23   
443-333 7 Annapolis MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-06-23   
443-333 8 Annapolis MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-10-28   
443-333 9 Annapolis MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-11-28   
443-334 A Pikesville MD   4773 XO MARYLAND, LLC 238      

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

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