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Ellicott City, MD

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
443-288 3 BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2009-10-24   
443-288 4 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-288 5 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-288 6 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-288 7 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-288 8 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-288 9 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-325 A   829J PAETEC ITEL, LLC 238   2025-04-01   
443-325 0   829J PAETEC ITEL, LLC 238      
443-325 1   829J PAETEC ITEL, LLC 238      
443-325 2 BLTMMDCH40Z  5562 METROPCS, INC. 238   2013-06-14   
443-325 3 BLTMMDCH40Z  5562 METROPCS, INC. 238   2013-06-14   
443-325 4 BLTMMDCH40Z  5562 METROPCS, INC. 238   2015-02-01   
443-325 5 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2014-01-06   
443-325 6 BLTMMDCH40Z  5562 METROPCS, INC. 238   2016-02-04   
443-325 7   829J PAETEC ITEL, LLC 238      
443-325 8   829J PAETEC ITEL, LLC 238      
443-325 9   829J PAETEC ITEL, LLC 238      
443-355 A BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-355 0 BLTMMDCHX7X  073H TELNYX LLC 238   2017-03-14   
443-355 1 BLTMMDCH40Z  5562 METROPCS, INC. 238   2017-01-19   
443-355 2   2593 CORE COMMUNICATIONS, INC.- MD 238   2018-06-16   
443-355 3 BLTMMDCH40Z  5562 METROPCS, INC. 238   2017-01-19   
443-355 4 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238      
443-355 5 BLTMMDCH40Z  5562 METROPCS, INC. 238   2017-03-25   
443-355 6 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2017-05-29   
443-355 7 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2017-05-29   
443-355 8 BLTMMDCH40Z  5562 METROPCS, INC. 238   2017-10-14   
443-355 9 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2017-10-20   
443-364 A CLMAMDNIDS1  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-364 0 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2018-08-27   
443-364 1 BLTMMDCH40Z  5562 METROPCS, INC. 238   2018-04-29   
443-364 2 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2007-05-23   
443-364 3 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2012-02-29   
443-364 4 BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2008-07-26   
443-364 5 CLMAMDNIDS1  7325 TELEPORT COMMUNICATIONS AMERICA, LLC - MD 238      
443-364 6 BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2009-02-11   
443-364 7 BLTMMDSNDS6  281E YMAX COMMUNICATIONS CORP. - MD 238   2009-02-11   
443-364 8 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2008-12-11   
443-364 9 BLTMMDSN6MD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 238   2007-07-27   
443-420 A   071F BANDWIDTH.COM CLEC, LLC - MD 238      
443-420 2 BLTMMDCH40Z  5562 METROPCS, INC. 238   2018-10-05   
443-420 3 BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2019-03-20   
443-420 6 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-04-08   
443-420 7 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-22   
443-420 8 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-02-22   
443-420 9 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-04-08   
443-574 A   829J PAETEC ITEL, LLC 238   2025-04-01   
443-574 0   829J PAETEC ITEL, LLC 238      
443-574 1   829J PAETEC ITEL, LLC 238      
443-574 2   829J PAETEC ITEL, LLC 238      
443-574 3   829J PAETEC ITEL, LLC 238      
443-574 4 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2010-10-28   
443-574 5 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-02-26   
443-574 6 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-08-19   
443-574 7 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-08-28   
443-574 8   829J PAETEC ITEL, LLC 238   2003-05-25   
443-574 9   829J PAETEC ITEL, LLC 238      
443-638 A BLTMMDDN4MD  2554 GLOBAL NAPS SOUTH, INC. - MD 238      
443-828 A   829J PAETEC ITEL, LLC 238   2025-04-01   
443-828 0   829J PAETEC ITEL, LLC 238      
443-828 1   829J PAETEC ITEL, LLC 238      
443-828 2   515J IP HORIZON LLC 238   2013-09-06   
443-828 3   829J PAETEC ITEL, LLC 238      
443-828 4   829J PAETEC ITEL, LLC 238      
443-828 5   829J PAETEC ITEL, LLC 238      
443-828 6   829J PAETEC ITEL, LLC 238      
443-828 7 BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-06-25   
443-828 8   829J PAETEC ITEL, LLC 238      
443-828 9   829J PAETEC ITEL, LLC 238      
443-973 A BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238      
443-973 0 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2024-10-26   
443-973 1 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2019-10-18   
443-973 2 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-03-21   
443-973 3 BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238   2008-10-01   
443-973 4 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-09-05   
443-973 5 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-10-17   
443-973 6 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2011-06-02   
443-973 7 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-973 8 BLTQMD01DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 238   2013-05-04   
443-973 9 BLTMMDCHXNX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 238   2001-11-19   
667-280 A BLTMMDCHXQX  197D VONAGE AMERICA LLC 238      
667-280 0 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2021-03-12   
667-280 1 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-11-20   
667-280 3 BLTMMDCHXQX  197D VONAGE AMERICA LLC 238   2020-06-19   
667-280 4 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-03-04   
667-280 5 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-03-04   
667-280 6 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-03-04   
667-280 7 BLTMMDCHXQX  197D VONAGE AMERICA LLC 238   2020-06-19   
667-280 8 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2021-05-22   
667-280 9 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2021-09-23   
667-371 A BLTMMDCH40Z  5562 METROPCS, INC. 238      
667-371 0 BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2022-09-30   
667-371 1 CLMAMDORGT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238   2023-03-10   
667-371 2 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2023-08-10   
667-371 3 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-03-21   
667-371 4 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-03-21   
667-371 5 BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2023-08-10   
667-371 6 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-02-07   
667-371 7 BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2022-02-07   

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Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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