Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Union Bridge, MD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-775 A UNBRMDUBRS0  9212 VERIZON MARYLAND, INC. 238      
410-775 0 UNBRMDUBRS0  9212 VERIZON MARYLAND, INC. 238      
410-775 1 UNBRMDUBRS0  9212 VERIZON MARYLAND, INC. 238      
410-775 2 UNBRMDUBRS0  9212 VERIZON MARYLAND, INC. 238      
410-775 3 BLTMMDCH25Z  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238   2006-05-05   
410-775 4 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2013-02-02   
410-775 5 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-05   
410-775 6 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
410-775 7 UNBRMDUBRS0  9212 VERIZON MARYLAND, INC. 238      
410-775 8 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-22   
410-775 9 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-28   
443-247 A BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238      
443-247 0 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2019-02-19   
443-247 1 BLTMMDCH14Z  2697 CTC COMMUNICATIONS CORP. - MD 238      
443-247 2 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2019-02-19   
443-247 3 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-03   
443-247 4 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-28   
443-247 5 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-28   
443-247 6   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-247 7 BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-25   
443-247 8 BLTMMDCHX7X  073H TELNYX LLC 238   2017-04-26   
443-247 9   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-937 A BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-937 0   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-04-02   
443-937 1 CLMAMDJTAMD  2589 US LEC OF MARYLAND, INC. 238   2004-02-05   
443-937 2 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-08   
443-937 3 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-01-09   
443-937 4   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-937 5 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-04-04   
443-937 6 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2007-01-19   
443-937 7 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-937 8 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-937 9 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
667-399 A BLTMMDCHXVX  321J HD CARRIER LLC 238      
667-399 0 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2020-06-11   
667-399 1 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2020-06-11   
667-399 3 BLTMMDCHXMX  506J TWILIO INTERNATIONAL, INC. 238   2020-12-26   
667-399 4 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-05-23   
667-399 5 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-03-06   
667-399 6 BLTMMDCHX7X  073H TELNYX LLC 238   2022-09-09   
667-399 7 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-03-06   
667-399 8 BLTMMDCHXVX  321J HD CARRIER LLC 238   2020-06-01   
667-399 9 BLTMMDCHXVX  321J HD CARRIER LLC 238   2020-06-01   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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