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West River, MD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-741 A NRBHMDNE741  9212 VERIZON MARYLAND, INC. 238      
410-741 0   9212 VERIZON MARYLAND, INC. 238      
410-741 1   9212 VERIZON MARYLAND, INC. 238      
410-741 2   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-04-02   
410-741 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2004-07-11   
410-741 4   7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238   2013-01-11   
410-741 5   9212 VERIZON MARYLAND, INC. 238      
410-741 6   9212 VERIZON MARYLAND, INC. 238      
410-741 7   8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238   2015-06-20   
410-741 8   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238   2006-07-31   
410-741 9   9212 VERIZON MARYLAND, INC. 238      
410-798 A MAYOMDMYRS1  9212 VERIZON MARYLAND, INC. 238      
410-867 A GLVLMDGLRS1  9212 VERIZON MARYLAND, INC. 238      
410-867 0   9212 VERIZON MARYLAND, INC. 238      
410-867 1   9212 VERIZON MARYLAND, INC. 238      
410-867 2   9212 VERIZON MARYLAND, INC. 238      
410-867 3   9212 VERIZON MARYLAND, INC. 238      
410-867 4   9212 VERIZON MARYLAND, INC. 238      
410-867 5   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2006-07-01   
410-867 6   9212 VERIZON MARYLAND, INC. 238      
410-867 7   9212 VERIZON MARYLAND, INC. 238      
410-867 8   9212 VERIZON MARYLAND, INC. 238      
410-867 9   9212 VERIZON MARYLAND, INC. 238      
443-203 A MAYOMDMYRS1  9212 VERIZON MARYLAND, INC. 238      
443-203 0   9212 VERIZON MARYLAND, INC. 238      
443-203 1   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-04-03   
443-203 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2008-06-20   
443-203 3   145J TERRA NOVA TELECOM INC. 238   2024-07-16   
443-203 4   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2003-08-20   
443-203 5   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-31   
443-203 6   318J COMCAST IP PHONE, LLC 238   2005-03-10   
443-203 7   508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-25   
443-203 8   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-06-26   
443-203 9   071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
443-294 A   071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-294 2   071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-02-27   
443-294 3   071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-07-02   
443-294 4   145J TERRA NOVA TELECOM INC. 238   2025-05-12   
443-294 5   071F BANDWIDTH.COM CLEC, LLC - MD 238   2021-03-25   
443-294 6   318J COMCAST IP PHONE, LLC 238   2013-07-19   
443-294 7   876D ONVOY, LLC - MD 238   2012-10-08   
443-294 8   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-294 9   515J IP HORIZON LLC 238   2015-03-23   
443-607 A   829J PAETEC ITEL, LLC 238   2025-04-01   
443-607 0   829J PAETEC ITEL, LLC 238      
443-607 1   829J PAETEC ITEL, LLC 238   2003-03-02   
443-607 2   071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-06-05   
443-607 3   829J PAETEC ITEL, LLC 238   2014-07-21   
443-607 4   318J COMCAST IP PHONE, LLC 238   2013-08-09   
443-607 5   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-607 6   318J COMCAST IP PHONE, LLC 238   2007-10-11   
443-607 7   829J PAETEC ITEL, LLC 238   2012-03-26   
443-607 8   318J COMCAST IP PHONE, LLC 238   2006-12-14   
443-607 9   515J IP HORIZON LLC 238   2016-01-04   
443-659 A BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-237 A BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
667-237 0   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-08-02   
667-237 1   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-08-02   
667-237 2   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-08-02   
667-237 3   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-02   
667-237 4   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-02   
667-237 6   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-02   
667-237 7   071F BANDWIDTH.COM CLEC, LLC - MD 238   2020-11-30   
667-237 8   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-02   
667-237 9   071F BANDWIDTH.COM CLEC, LLC - MD 238   2020-11-30   
667-427 A BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-427 0   490J DISH WIRELESS, LLC 238   2023-06-30   
667-427 1   876D ONVOY, LLC - MD 238   2023-08-10   
667-427 2   876D ONVOY, LLC - MD 238   2023-08-10   
667-427 3   516J TON80 COMMUNICATIONS, LLC 238   2022-03-21   
667-427 4   624H ONVOY SPECTRUM, LLC 238   2021-05-23   
667-427 5   876D ONVOY, LLC - MD 238   2023-08-10   
667-427 6   876D ONVOY, LLC - MD 238   2021-05-22   
667-427 7   624H ONVOY SPECTRUM, LLC 238   2022-01-28   
667-427 8   624H ONVOY SPECTRUM, LLC 238   2022-01-28   
667-427 9   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2022-01-28   
667-666 A BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-666 0   876D ONVOY, LLC - MD 238   2016-06-13   
667-666 1   876D ONVOY, LLC - MD 238   2016-06-13   
667-666 2   876D ONVOY, LLC - MD 238   2016-08-05   
667-666 3   876D ONVOY, LLC - MD 238   2016-08-05   
667-666 4   071F BANDWIDTH.COM CLEC, LLC - MD 238   2018-05-31   
667-666 5   071F BANDWIDTH.COM CLEC, LLC - MD 238   2021-03-25   
667-666 6   876D ONVOY, LLC - MD 238   2016-06-02   
667-666 7   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-02   
667-666 8   073H TELNYX LLC 238   2017-04-26   
667-666 9   515J IP HORIZON LLC 238   2016-10-14   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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