Local Calling Guide

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Silver Run, MD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-346 A SLRNMDSLRS0  9212 VERIZON MARYLAND, INC. 238      
410-346 0 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-04-04   
410-346 1 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-08   
410-346 2 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2011-07-08   
410-346 3 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-04-04   
410-346 4 BLTMMD91DS2  2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238   2003-12-25   
410-346 5 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-05   
410-346 6 SLRNMDSLRS0  9212 VERIZON MARYLAND, INC. 238      
410-346 7 SLRNMDSLRS0  9212 VERIZON MARYLAND, INC. 238      
410-346 8 SLRNMDSLRS0  9212 VERIZON MARYLAND, INC. 238   2006-07-27   
410-346 9 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-28   
443-349 A BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
443-383 A   829J PAETEC ITEL, LLC 238   2025-04-01   
443-383 0 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-08   
443-383 1   829J PAETEC ITEL, LLC 238      
443-383 2 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-08   
443-383 3 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-25   
443-383 4 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-03-25   
443-383 5 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-08   
443-383 6 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-08   
443-383 7 BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-12   
443-383 8 BLTMMDCHX7X  073H TELNYX LLC 238   2017-04-26   
443-383 9 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-08   
443-732 A BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-732 0 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
443-732 1   829J PAETEC ITEL, LLC 238   2004-02-05   
443-732 2 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-03-08   
443-732 3 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-10-08   
443-732 4   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-03-29   
443-732 5 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-06-23   
443-732 6 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2007-01-19   
443-732 7 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-732 8 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-732 9 BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
667-758 A BLTQMD01AMD  965H FRACTEL, LLC 238      
667-758 0 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-03-06   
667-758 1 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-03-06   
667-758 2 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-07-12   
667-758 3 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-07-12   
667-758 4 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-05-23   
667-758 6 BLTQMD01AMD  965H FRACTEL, LLC 238   2020-09-12   
667-758 8 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-03-04   
667-758 9   145J TERRA NOVA TELECOM INC. 238   2025-07-21   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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