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Parkville, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
443-588 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-653 A BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-653 0   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-653 1   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-653 2   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-653 3   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2014-09-21   
443-653 4   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2013-12-27   
443-653 5   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2008-04-21   
443-653 6   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-653 7   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2014-12-13   
443-653 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2014-12-13   
443-653 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
443-678 A WHMRMDWMRS2  9212 VERIZON MARYLAND, INC. 238      
443-678 0   876D ONVOY, LLC - MD 238   2014-08-31   
443-678 1   9212 VERIZON MARYLAND, INC. 238      
443-678 2   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2016-02-05   
443-678 3   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2018-06-11   
443-678 4   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-01   
443-678 5   876D ONVOY, LLC - MD 238   2024-02-23   
443-678 6   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-678 7   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-678 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2015-11-27   
443-678 9   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2015-11-27   
443-725 A   829J PAETEC ITEL, LLC 238   2025-04-01   
443-725 0   829J PAETEC ITEL, LLC 238      
443-725 1   829J PAETEC ITEL, LLC 238      
443-725 2   829J PAETEC ITEL, LLC 238      
443-725 3   829J PAETEC ITEL, LLC 238      
443-725 4   318J COMCAST IP PHONE, LLC 238   2006-12-29   
443-725 5   318J COMCAST IP PHONE, LLC 238   2006-12-29   
443-725 6   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2019-02-08   
443-725 7   318J COMCAST IP PHONE, LLC 238   2016-12-15   
443-725 8   829J PAETEC ITEL, LLC 238      
443-725 9   829J PAETEC ITEL, LLC 238      
443-793 A BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-793 0   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-793 1   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-793 2   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-01   
443-793 3   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-01   
443-793 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-793 5   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2017-05-29   
443-793 6   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2017-05-29   
443-793 7   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2018-08-11   
443-793 8   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2019-10-07   
443-793 9   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-01   
443-946 A BLTQMD01BMD  2593 CORE COMMUNICATIONS, INC.- MD 238      
443-946 0   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2020-04-06   
443-946 1   318J COMCAST IP PHONE, LLC 238   2020-02-12   
443-946 2   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-01   
443-946 3   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-10-23   

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

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