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Washington Zone 16, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
240-846 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
240-846 7   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
240-846 8   515J IP HORIZON LLC 236   2016-05-31   
240-846 9   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-05-01   
240-897 A MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-897 0   624H ONVOY SPECTRUM, LLC 236   2022-01-28   
240-897 1   5562 METROPCS, INC. 236   2021-12-03   
240-897 2   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
240-897 3   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2021-12-03   
240-897 4   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-05-01   
240-897 5   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
240-897 6   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
240-897 7   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
240-897 8   073H TELNYX LLC 236   2017-04-27   
240-897 9   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
240-949 A   829J PAETEC ITEL, LLC 236   2025-04-02   
240-949 0   829J PAETEC ITEL, LLC 236      
240-949 1   876D ONVOY, LLC - MD 236   2020-06-11   
240-949 2   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-01-04   
240-949 3   829J PAETEC ITEL, LLC 236      
240-949 4   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2003-08-23   
240-949 5   829J PAETEC ITEL, LLC 236      
240-949 6   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2005-01-04   
240-949 7   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2006-05-05   
240-949 8   829J PAETEC ITEL, LLC 236      
240-949 9   829J PAETEC ITEL, LLC 236      
240-966 A ARTNVAARXJY  516J TON80 COMMUNICATIONS, LLC 236   2024-01-31   
240-966 0   071F BANDWIDTH.COM CLEC, LLC - MD 236   2022-09-22   
240-966 1   071F BANDWIDTH.COM CLEC, LLC - MD 236   2022-09-22   
240-966 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2022-07-19   
240-966 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2022-07-19   
240-966 4   876D ONVOY, LLC - MD 236   2022-10-15   
240-966 5   876D ONVOY, LLC - MD 236   2022-10-15   
240-966 6   516J TON80 COMMUNICATIONS, LLC 236   2022-04-30   
240-966 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236   2023-06-15   
240-966 8   876D ONVOY, LLC - MD 236   2023-08-10   
240-966 9   568G PEERLESS NETWORK OF MARYLAND, LLC 236   2023-02-27   
301-234 A ALTWMDATRP0  9212 VERIZON MARYLAND, INC. 236      
301-234 0   9212 VERIZON MARYLAND, INC. 236      
301-234 1   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-22   
301-234 2   624H ONVOY SPECTRUM, LLC 236   2021-12-09   
301-234 3   829J PAETEC ITEL, LLC 236   2017-10-06   
301-234 4   2593 CORE COMMUNICATIONS, INC.- MD 236   2018-10-23   
301-234 5   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-22   
301-234 6   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2008-05-16   
301-234 7   876D ONVOY, LLC - MD 236   2018-09-13   
301-234 8   876D ONVOY, LLC - MD 236   2018-09-13   
301-234 9   2593 CORE COMMUNICATIONS, INC.- MD 236   2019-04-22   
301-235 A WASHDCINDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 236      
301-235 0   2593 CORE COMMUNICATIONS, INC.- MD 236   2004-03-26   

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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