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Waterloo (Washington DC LATA), MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-264 A LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-264 0 LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-264 1 WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2019-03-06   
410-264 2   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-30   
410-264 3 LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-264 4 LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-264 5 LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-264 6   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-30   
410-264 7 LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-264 8 LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-264 9 LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-416 A WASHDCDP8MD  9748 AMERICAN MESSAGING SERVICES, LLC 236      
410-509 A VINNVACB2MD  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 236      
410-606 A MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
410-619 A WASHDCDP8MD  9748 AMERICAN MESSAGING SERVICES, LLC 236      
410-705 A WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
410-705 0 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2014-10-20   
410-705 1 WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236   2008-05-26   
410-705 2 VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-10-17   
410-705 3 WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236   2008-05-26   
410-705 4 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2015-02-13   
410-705 5 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2015-07-06   
410-705 6 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2007-10-22   
410-705 7 VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-10-17   
410-705 8 WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236   2007-07-28   
410-705 9   515J IP HORIZON LLC 236   2015-03-21   
410-722 A MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
410-724 A LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-724 0 LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-724 1 WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2020-10-26   
410-724 2 LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-724 3 LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-724 4 LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-724 5 LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-724 6 LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-724 7 LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-724 8 WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2006-09-21   
410-724 9 LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-738 A MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
410-791 A MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
410-792 A LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-797 A LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-813 A MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
410-815 A MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
410-824 A LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
410-824 0 ARTNVAARXGY  478J NUSO, LLC 236   2021-01-16   
410-824 1 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2010-09-03   
410-824 2   829J PAETEC ITEL, LLC 236   2006-10-12   
410-824 3   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-30   
410-824 4 WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236   2009-01-15   
410-824 5 VINNVACBDS0  876D ONVOY, LLC - MD 236   2022-11-24   
410-824 6   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-30   
410-824 7 LARLMDCC5MD  7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 236      
410-824 8 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2012-01-10   
410-824 9 WASHDC127MD  073H TELNYX LLC 236   2023-08-12   
410-834 A WASIDCRG7MD  508J CENTURYLINK COMMUNICATIONS, LLC 236      
410-834 0 VINNVACBDS0  876D ONVOY, LLC - MD 236   2012-10-07   
410-834 1 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2012-10-12   
410-834 2 WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2010-08-19   
410-834 3 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2013-06-16   
410-834 4 WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2019-12-18   
410-834 5 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2014-02-17   
410-834 6   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-30   
410-834 7 WASIDCRG7MD  508J CENTURYLINK COMMUNICATIONS, LLC 236   2013-10-01   
410-834 8 VINNVACBDS0  876D ONVOY, LLC - MD 236   2014-10-24   
410-834 9 VINNVACBDS0  876D ONVOY, LLC - MD 236   2014-10-24   
410-854 A ODTNMDAUDS0  9212 VERIZON MARYLAND, INC. 236      
410-862 A VINNVACBDS0  876D ONVOY, LLC - MD 236      
410-862 0 SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2013-05-04   
410-862 1 SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2013-05-04   
410-862 2 VINNVACBDS0  876D ONVOY, LLC - MD 236   2015-07-12   
410-862 3 VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-04-01   
410-862 4 VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-04-01   
410-862 5   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-30   
410-862 6 OCQNVAXAVMD  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 236   2012-08-27   
410-862 7   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-30   
410-862 8 VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-03-30   
410-862 9   829J PAETEC ITEL, LLC 236   2013-10-21   
410-880 A LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-888 A LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-888 0 WASHDC12DS6  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2021-01-07   
410-888 1 LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-888 2   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-30   
410-888 3 VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-03-30   
410-888 4 VINNVACBDS0  876D ONVOY, LLC - MD 236   2012-04-05   
410-888 5 LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-888 6   829J PAETEC ITEL, LLC 236   2013-11-21   
410-888 7 WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236   2011-03-15   
410-888 8 LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-888 9 LARLMDLRDS0  9212 VERIZON MARYLAND, INC. 236      
410-898 A MRKKMDMKDS0  9212 VERIZON MARYLAND, INC. 236      
410-930 A LARLMD90CM0  6810 REDI-CALL COMMUNICATIONS CO. 236      
410-985 A VINNVACB2MD  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 236      
443-329 A   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
443-329 2 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-02-20   
443-329 3 WASLDCRGDS0  281E YMAX COMMUNICATIONS CORP. - MD 236   2009-01-15   
443-329 4 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
443-329 5 VINNVACBDS0  876D ONVOY, LLC - MD 236   2020-06-20   
443-329 6   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-30   
443-329 7   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-30   

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

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