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Hampstead, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-374 A HMPSMDHERS1  9212 VERIZON MARYLAND, INC. 238      
410-374 0   9212 VERIZON MARYLAND, INC. 238      
410-374 1   9212 VERIZON MARYLAND, INC. 238      
410-374 2   9212 VERIZON MARYLAND, INC. 238      
410-374 3   9212 VERIZON MARYLAND, INC. 238      
410-374 4   9212 VERIZON MARYLAND, INC. 238      
410-374 5   9212 VERIZON MARYLAND, INC. 238      
410-374 6   9212 VERIZON MARYLAND, INC. 238      
410-374 7   829J PAETEC ITEL, LLC 238   2008-03-13   
410-374 8   9212 VERIZON MARYLAND, INC. 238      
410-374 9   9212 VERIZON MARYLAND, INC. 238      
443-291 A   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-291 2   876D ONVOY, LLC - MD 238   2016-03-21   
443-291 3   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-09-09   
443-291 4   145J TERRA NOVA TELECOM INC. 238   2025-08-29   
443-291 5   876D ONVOY, LLC - MD 238   2024-03-08   
443-291 6   318J COMCAST IP PHONE, LLC 238   2005-07-20   
443-291 7   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-03-03   
443-291 8   876D ONVOY, LLC - MD 238   2016-03-21   
443-291 9   071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
443-375 A BLTMMDCH40Z  5562 METROPCS, INC. 238      
443-375 0   5562 METROPCS, INC. 238      
443-375 1   5562 METROPCS, INC. 238      
443-375 2   5562 METROPCS, INC. 238      
443-375 3   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-09-04   
443-375 4   4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2004-02-14   
443-375 5   876D ONVOY, LLC - MD 238   2024-04-19   
443-375 6   5562 METROPCS, INC. 238      
443-375 7   5562 METROPCS, INC. 238      
443-375 8   5562 METROPCS, INC. 238      
443-375 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-507 A BLTMMDFMDS0  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-507 0   9212 VERIZON MARYLAND, INC. 238   2003-10-17   
443-507 1   829J PAETEC ITEL, LLC 238   2003-07-20   
443-507 3   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-03-29   
443-507 4   2596 QUANTUM TELECOMMUNICATIONS, INC. - MD 238   2016-01-31   
443-507 5   9212 VERIZON MARYLAND, INC. 238   2005-05-27   
443-507 6   318J COMCAST IP PHONE, LLC 238   2009-06-13   
443-507 7   145J TERRA NOVA TELECOM INC. 238   2024-02-15   
443-507 8   071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-07-02   
443-507 9   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-508 A   829J PAETEC ITEL, LLC 238   2025-04-01   
443-508 0   829J PAETEC ITEL, LLC 238      
443-508 1   5562 METROPCS, INC. 238   2004-12-27   
443-508 2   318J COMCAST IP PHONE, LLC 238   2013-02-17   
443-508 3   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2009-01-05   
443-508 4   9212 VERIZON MARYLAND, INC. 238   2004-10-07   
443-508 5   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-508 6   145J TERRA NOVA TELECOM INC. 238   2024-09-12   
443-508 7   876D ONVOY, LLC - MD 238   2012-10-07   

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

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