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Towson, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
443-991 4 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2014-03-26   
443-991 5 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2015-04-14   
443-991 6 BLTMMDCH40Z  5562 METROPCS, INC. 238   2013-08-01   
443-991 7 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2012-02-27   
443-991 8 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-02-29   
443-991 9 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2012-11-01   
667-206 A BLTMMDCH40Z  5562 METROPCS, INC. 238      
667-206 0 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2013-09-22   
667-206 1 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2015-10-15   
667-206 2 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2016-12-12   
667-206 3 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-01-11   
667-206 4 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2014-08-31   
667-206 5 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-10-11   
667-206 6 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-10-11   
667-206 7   515J IP HORIZON LLC 238   2016-01-04   
667-206 8 BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2013-12-27   
667-206 9 BLTMMDCH40Z  5562 METROPCS, INC. 238   2013-09-14   
667-251 A BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
667-251 0 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2015-02-14   
667-251 1 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2015-02-14   
667-251 2 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2015-02-14   
667-251 3 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2015-02-14   
667-251 4 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2015-02-14   
667-251 5 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2015-02-14   
667-251 6 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2015-02-14   
667-251 7 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2015-02-14   
667-251 8 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2015-02-14   
667-251 9 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2015-02-14   
667-275 A BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238      
667-275 0 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2019-12-15   
667-275 1 BLTOMDKHBMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2019-12-15   
667-275 2 BLTQMD01BMD  516J TON80 COMMUNICATIONS, LLC 238   2021-06-28   
667-275 3 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-07-12   
667-275 4 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-07-12   
667-275 5 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2021-07-20   
667-275 6 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2021-07-20   
667-275 7 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2019-12-28   
667-275 8 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-03-17   
667-275 9 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-09-04   
667-278 A CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
667-278 0 BLTMMDCHXQX  197D VONAGE AMERICA LLC 238   2020-05-13   
667-278 1 BLTMMDCHXQX  197D VONAGE AMERICA LLC 238   2020-05-13   
667-278 2 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-07-20   
667-278 3 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-08-14   
667-278 4 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-08-14   
667-278 5 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-04-24   
667-278 6 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-04-24   
667-278 7 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-04-24   
667-278 8 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-04-24   
667-278 9 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2020-04-23   

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Last updated: Sat, 02 May 2026 12:20:53 UTC

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