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Elkridge, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
443-445 A EKRGMDELDS0  9212 VERIZON MARYLAND, INC. 238      
443-445 0 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-25   
443-445 1 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2015-04-17   
443-445 2 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-06-26   
443-445 3 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2005-03-10   
443-445 6 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2005-02-15   
443-445 7 EKRGMDELDS0  9212 VERIZON MARYLAND, INC. 238   2004-02-16   
443-445 8 EKRGMDELDS0  9212 VERIZON MARYLAND, INC. 238   2004-02-16   
443-445 9 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2001-11-19   
443-459 A   829J PAETEC ITEL, LLC 238   2025-04-01   
443-459 0   829J PAETEC ITEL, LLC 238      
443-459 1 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-10-21   
443-459 2 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2005-02-15   
443-459 3   829J PAETEC ITEL, LLC 238   2004-09-09   
443-459 4 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-08-13   
443-459 5 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2005-12-12   
443-459 6 BLTMMDCH40Z  5562 METROPCS, INC. 238   2011-09-19   
443-459 7   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2011-11-07   
443-459 8 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2005-12-12   
443-459 9 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2005-12-12   
443-492 A   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-492 0 BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238   2024-10-12   
443-492 2 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-02-12   
443-492 3 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-02-12   
443-492 5 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-492 6   829J PAETEC ITEL, LLC 238   2008-08-01   
443-492 7   145J TERRA NOVA TELECOM INC. 238   2023-04-29   
443-492 8 BLTMMDCH40Z  5562 METROPCS, INC. 238   2011-03-15   
443-492 9 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
443-561 A   829J PAETEC ITEL, LLC 238   2025-04-01   
443-561 0   829J PAETEC ITEL, LLC 238      
443-561 1   829J PAETEC ITEL, LLC 238      
443-561 2   829J PAETEC ITEL, LLC 238      
443-561 3   829J PAETEC ITEL, LLC 238      
443-561 4 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2009-05-26   
443-561 5 BLTMMDCH40Z  5562 METROPCS, INC. 238   2011-03-15   
443-561 6 BLTMMDCH40Z  5562 METROPCS, INC. 238   2011-03-15   
443-561 7 BLTMMDCH40Z  5562 METROPCS, INC. 238   2011-03-15   
443-561 8 BLTMMDCH40Z  5562 METROPCS, INC. 238   2011-03-15   
443-561 9   829J PAETEC ITEL, LLC 238      
443-592 A BLTMMD91GT0  2593 CORE COMMUNICATIONS, INC.- MD 238      
443-592 0 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-03-18   
443-592 1 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-01-16   
443-592 2 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-03-18   
443-592 3 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2017-04-18   
443-592 4 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-01-16   
443-592 5   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-592 6   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-592 7   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-592 8   515J IP HORIZON LLC 238   2019-04-26   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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