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Essex, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-238 A ESSXMDEXDS0  9212 VERIZON MARYLAND, INC. 238      
410-238 0   9212 VERIZON MARYLAND, INC. 238      
410-238 1   9212 VERIZON MARYLAND, INC. 238      
410-238 2   9212 VERIZON MARYLAND, INC. 238      
410-238 3   9212 VERIZON MARYLAND, INC. 238      
410-238 4   9212 VERIZON MARYLAND, INC. 238      
410-238 5   9212 VERIZON MARYLAND, INC. 238      
410-238 6   9212 VERIZON MARYLAND, INC. 238      
410-238 7   9212 VERIZON MARYLAND, INC. 238      
410-238 8   9212 VERIZON MARYLAND, INC. 238      
410-238 9   8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 238   2015-06-11   
410-391 A ESSXMDEXDS0  9212 VERIZON MARYLAND, INC. 238      
410-406 A BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-406 0   4492 VDL, INC. DBA GLOBAL TELECOM BROKERS - MD 238   2003-11-08   
410-406 1   876D ONVOY, LLC - MD 238   2016-03-08   
410-406 2   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-04-19   
410-406 3   7591 LEVEL 3 TELECOM OF MARYLAND, LLC - MD 238   2006-06-01   
410-406 4   964H BARR TELL USA, INC. 238   2016-12-17   
410-406 5   2593 CORE COMMUNICATIONS, INC.- MD 238   2004-03-29   
410-406 6   876D ONVOY, LLC - MD 238   2017-06-02   
410-406 7   071F BANDWIDTH.COM CLEC, LLC - MD 238   2004-11-27   
410-406 8   829J PAETEC ITEL, LLC 238   2004-03-27   
410-406 9   7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-574 A ESSXMDEXDS0  9212 VERIZON MARYLAND, INC. 238      
410-682 A ESSXMDEXDS0  9212 VERIZON MARYLAND, INC. 238      
410-682 0   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-682 1   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-682 2   9212 VERIZON MARYLAND, INC. 238      
410-682 3   9212 VERIZON MARYLAND, INC. 238      
410-682 4   9212 VERIZON MARYLAND, INC. 238      
410-682 5   9212 VERIZON MARYLAND, INC. 238      
410-682 6   9212 VERIZON MARYLAND, INC. 238      
410-682 7   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   
410-682 8   9212 VERIZON MARYLAND, INC. 238      
410-682 9   9212 VERIZON MARYLAND, INC. 238      
410-686 A ESSXMDEXDS0  9212 VERIZON MARYLAND, INC. 238      
410-687 A ESSXMDEXDS0  9212 VERIZON MARYLAND, INC. 238      
410-780 A ESSXMDEXDS0  9212 VERIZON MARYLAND, INC. 238      
410-866 A BLTMMDFRDS0  9212 VERIZON MARYLAND, INC. 238      
410-918 A ESSXMDEXDS0  9212 VERIZON MARYLAND, INC. 238      
410-918 0   9212 VERIZON MARYLAND, INC. 238      
410-918 1   9212 VERIZON MARYLAND, INC. 238      
410-918 2   9212 VERIZON MARYLAND, INC. 238      
410-918 3   9212 VERIZON MARYLAND, INC. 238      
410-918 4   9212 VERIZON MARYLAND, INC. 238      
410-918 5   9212 VERIZON MARYLAND, INC. 238      
410-918 6   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
410-918 7   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2017-05-29   
410-918 8   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2017-05-29   
410-918 9   9212 VERIZON MARYLAND, INC. 238      
443-231 A BLTMMDCHCMD  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-231 0   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2005-02-11   
443-231 1   829J PAETEC ITEL, LLC 238   2005-04-29   
443-231 2   7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-231 3   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2006-04-24   
443-231 4   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2003-02-20   
443-231 5   318J COMCAST IP PHONE, LLC 238   2005-03-10   
443-231 6   318J COMCAST IP PHONE, LLC 238   2006-06-20   
443-231 7   318J COMCAST IP PHONE, LLC 238   2006-06-20   
443-231 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2006-08-25   
443-231 9   515J IP HORIZON LLC 238   2016-05-31   
443-460 A BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-460 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-460 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-460 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-460 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-460 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-460 5   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-09-29   
443-460 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-460 7   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-460 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2008-03-31   
443-460 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-505 A   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-505 0   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-05-01   
443-505 1   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-05-01   
443-505 2   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2011-12-24   
443-505 3   318J COMCAST IP PHONE, LLC 238   2014-03-20   
443-505 4   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-09-29   
443-505 5   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2025-01-26   
443-505 6   071F BANDWIDTH.COM CLEC, LLC - MD 238   2018-10-18   
443-505 7   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2008-05-16   
443-505 8   318J COMCAST IP PHONE, LLC 238   2014-09-21   
443-505 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2019-10-07   
443-559 A BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238      
443-559 0   318J COMCAST IP PHONE, LLC 238      
443-559 1   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2008-02-04   
443-559 2   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2007-03-02   
443-559 3   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-04-30   
443-559 4   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-04-29   
443-559 5   318J COMCAST IP PHONE, LLC 238   2007-10-29   
443-559 6   318J COMCAST IP PHONE, LLC 238   2007-10-29   
443-559 7   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2008-06-16   
443-559 8   318J COMCAST IP PHONE, LLC 238   2008-06-16   
443-559 9   318J COMCAST IP PHONE, LLC 238   2008-06-16   
443-579 A   829J PAETEC ITEL, LLC 238   2025-04-01   
443-579 0   829J PAETEC ITEL, LLC 238      
443-579 1   829J PAETEC ITEL, LLC 238      
443-579 2   829J PAETEC ITEL, LLC 238      
443-579 3   829J PAETEC ITEL, LLC 238      
443-579 4   071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-06-26   

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

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