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Washington Zone 4, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
240-613 2   2589 US LEC OF MARYLAND, INC. 236   2012-05-27   
240-613 3   2589 US LEC OF MARYLAND, INC. 236   2012-05-27   
240-613 4   2589 US LEC OF MARYLAND, INC. 236   2012-05-27   
240-613 5   2589 US LEC OF MARYLAND, INC. 236   2012-05-27   
240-613 6   2589 US LEC OF MARYLAND, INC. 236   2012-05-27   
240-613 7   2589 US LEC OF MARYLAND, INC. 236   2012-05-27   
240-613 8   2589 US LEC OF MARYLAND, INC. 236   2012-05-27   
240-613 9   2589 US LEC OF MARYLAND, INC. 236   2012-05-27   
240-615 A BTVLMD12CMA  5562 METROPCS, INC. 236      
240-615 0 BTVLMD12CMA  5562 METROPCS, INC. 236   2013-07-20   
240-615 1 BTVLMD12CMA  5562 METROPCS, INC. 236   2013-07-20   
240-615 2 BTVLMD12CMA  5562 METROPCS, INC. 236   2013-07-20   
240-615 3 BTVLMD12CMA  5562 METROPCS, INC. 236   2013-07-20   
240-615 4 BTVLMD12CMA  5562 METROPCS, INC. 236   2013-07-20   
240-615 5 BTVLMD12CMA  5562 METROPCS, INC. 236   2013-07-20   
240-615 6 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2013-10-11   
240-615 7 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2013-10-11   
240-615 8 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2014-08-25   
240-615 9 BTVLMD12CMA  5562 METROPCS, INC. 236   2013-07-20   
240-623 A WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236      
240-623 0 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2015-02-05   
240-623 1 WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2015-02-05   
240-623 2 VINNVACBDS0  876D ONVOY, LLC - MD 236   2015-05-15   
240-623 3   515J IP HORIZON LLC 236   2016-05-31   
240-623 4 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2015-06-30   
240-623 5 VINNVACBDS0  876D ONVOY, LLC - MD 236   2015-07-30   
240-623 6 WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2015-11-01   
240-623 7 VINNVACBDS0  876D ONVOY, LLC - MD 236   2015-06-27   
240-623 8 VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-01-04   
240-623 9 VINNVACBDS0  876D ONVOY, LLC - MD 236   2016-01-04   
240-667 A   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-667 0 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-667 1 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2006-07-25   
240-667 2 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2006-07-25   
240-667 3 WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2024-12-05   
240-667 4   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-667 5 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-667 6 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2012-11-16   
240-667 7 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2007-07-03   
240-667 8 BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2024-07-16   
240-667 9 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-696 A MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-696 0 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-04-07   
240-696 1 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-04-07   
240-696 2 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2007-04-28   
240-696 3 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2011-02-27   
240-696 4 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-696 5 ARTNVAARXDY  318J COMCAST IP PHONE, LLC 236   2014-04-28   
240-696 6 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-04-03   
240-696 7 MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-04-03   

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Last updated: Sat, 02 May 2026 12:20:53 UTC

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