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Baltimore, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
410-448 4   9212 VERIZON MARYLAND, INC. 238      
410-448 5   9212 VERIZON MARYLAND, INC. 238      
410-448 6   9212 VERIZON MARYLAND, INC. 238      
410-448 7   9212 VERIZON MARYLAND, INC. 238      
410-448 8   829J PAETEC ITEL, LLC 238   2005-09-26   
410-448 9   9212 VERIZON MARYLAND, INC. 238      
410-450 A BLTMMDCH1DD  9212 VERIZON MARYLAND, INC. 238      
410-450 0   9212 VERIZON MARYLAND, INC. 238      
410-450 1   9212 VERIZON MARYLAND, INC. 238      
410-450 2   9212 VERIZON MARYLAND, INC. 238      
410-450 3   071F BANDWIDTH.COM CLEC, LLC - MD 238   2020-09-28   
410-450 4   071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-08-12   
410-450 5   9212 VERIZON MARYLAND, INC. 238      
410-450 6   9212 VERIZON MARYLAND, INC. 238      
410-450 7   9212 VERIZON MARYLAND, INC. 238      
410-450 8   9212 VERIZON MARYLAND, INC. 238      
410-450 9   9212 VERIZON MARYLAND, INC. 238      
410-454 A BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
410-456 A BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
410-458 A BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
410-462 A BLTMMDMDDS0  9212 VERIZON MARYLAND, INC. 238      
410-464 A BLTMMDYKDS0  9212 VERIZON MARYLAND, INC. 238      
410-464 0   9212 VERIZON MARYLAND, INC. 238      
410-464 1   9212 VERIZON MARYLAND, INC. 238      
410-464 2   9212 VERIZON MARYLAND, INC. 238      
410-464 3   9212 VERIZON MARYLAND, INC. 238      
410-464 4   9212 VERIZON MARYLAND, INC. 238      
410-464 5   9212 VERIZON MARYLAND, INC. 238      
410-464 6   9212 VERIZON MARYLAND, INC. 238      
410-464 7   829J PAETEC ITEL, LLC 238   2005-02-21   
410-464 8   829J PAETEC ITEL, LLC 238   2005-02-21   
410-464 9   9212 VERIZON MARYLAND, INC. 238      
410-466 A BLTMMDLBDS0  9212 VERIZON MARYLAND, INC. 238      
410-467 A BLTMMDUVDS0  9212 VERIZON MARYLAND, INC. 238      
410-468 A BLTMMDCHDS3  9212 VERIZON MARYLAND, INC. 238      
410-469 A ARBTMDARDS0  9212 VERIZON MARYLAND, INC. 238      
410-469 0   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2008-04-01   
410-469 1   071F BANDWIDTH.COM CLEC, LLC - MD 238   2015-05-14   
410-469 2   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
410-469 3   9212 VERIZON MARYLAND, INC. 238      
410-469 4   9212 VERIZON MARYLAND, INC. 238      
410-469 5   9212 VERIZON MARYLAND, INC. 238      
410-469 6   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2014-07-20   
410-469 7   6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2014-07-20   
410-469 8   876D ONVOY, LLC - MD 238   2015-02-23   
410-469 9   318J COMCAST IP PHONE, LLC 238   2015-03-20   
410-470 A BLTMMDCHDS3  9212 VERIZON MARYLAND, INC. 238      
410-470 0   9212 VERIZON MARYLAND, INC. 238   2005-08-19   
410-470 1   9212 VERIZON MARYLAND, INC. 238   2005-08-19   
410-470 2   9212 VERIZON MARYLAND, INC. 238   2005-08-19   
410-470 3   9212 VERIZON MARYLAND, INC. 238   2005-08-19   
410-470 4   9212 VERIZON MARYLAND, INC. 238   2005-08-19   
410-470 5   9212 VERIZON MARYLAND, INC. 238   2005-08-19   
410-470 6   9212 VERIZON MARYLAND, INC. 238   2005-08-19   
410-470 7   9212 VERIZON MARYLAND, INC. 238   2005-08-19   
410-470 8   9212 VERIZON MARYLAND, INC. 238   2005-08-19   
410-470 9   9212 VERIZON MARYLAND, INC. 238   2005-08-19   
410-478 A CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
410-478 0   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
410-478 1   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
410-478 2   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
410-478 3   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
410-478 4   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
410-478 5   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
410-478 6   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
410-478 7   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
410-478 8   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
410-478 9   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-09-02   
410-481 A BLTMMDCH1DD  9212 VERIZON MARYLAND, INC. 238      
410-483 A BLTMMDFRDS0  9212 VERIZON MARYLAND, INC. 238      
410-483 0   9212 VERIZON MARYLAND, INC. 238      
410-483 1   9212 VERIZON MARYLAND, INC. 238      
410-483 2   9212 VERIZON MARYLAND, INC. 238      
410-483 3   9212 VERIZON MARYLAND, INC. 238      
410-483 4   9212 VERIZON MARYLAND, INC. 238      
410-483 5   9212 VERIZON MARYLAND, INC. 238      
410-483 6   9212 VERIZON MARYLAND, INC. 238      
410-483 7   9212 VERIZON MARYLAND, INC. 238      
410-483 8   829J PAETEC ITEL, LLC 238   2005-02-21   
410-483 9   9212 VERIZON MARYLAND, INC. 238      
410-485 A BLTMMDFRDS0  9212 VERIZON MARYLAND, INC. 238      
410-488 A BLTMMDFRDS0  9212 VERIZON MARYLAND, INC. 238      
410-493 A BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-493 0   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-493 1   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-493 2   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-493 3   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-493 4   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-493 5   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-493 6   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-493 7   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-493 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-493 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-499 A BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-499 0   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-499 1   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-499 2   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-499 3   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-499 4   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
410-499 5   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      

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Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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