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Mason, MI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
517-244 A MASNMIMSRSA  9323 MICHIGAN BELL TEL CO 346      
517-244 0   9323 MICHIGAN BELL TEL CO 346      
517-244 1   9323 MICHIGAN BELL TEL CO 346      
517-244 2   9323 MICHIGAN BELL TEL CO 346      
517-244 3   9323 MICHIGAN BELL TEL CO 346      
517-244 4   9323 MICHIGAN BELL TEL CO 346      
517-244 5   7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 346   2004-03-16   
517-244 6   7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 346   2006-04-15   
517-244 7   7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 346   2004-09-05   
517-244 8   9323 MICHIGAN BELL TEL CO 346      
517-244 9   9323 MICHIGAN BELL TEL CO 346      
517-362 A LNNGMIMNXSZ  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346   2024-04-06   
517-362 0   991E BANDWIDTH.COM CLEC, LLC - MI 346   2024-10-31   
517-362 1   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 346   2025-01-15   
517-362 7   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346   2024-04-06   
517-362 8   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346   2024-04-06   
517-362 9   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 346   2024-04-06   
517-525 A LNNGMIXIAMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 346      
517-604 A LNNGMIXIAMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 346      
517-604 0   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 346      
517-604 1   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 346      
517-604 2   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 346   2019-05-17   
517-604 3   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 346   2019-01-17   
517-604 4   543C ONVOY, LLCV - MI 346   2016-03-28   
517-604 5   543C ONVOY, LLCV - MI 346   2016-03-28   
517-604 6   961J WOW! INTERNET, CABLE AND PHONE 346   2012-05-20   
517-604 7   508J CENTURYLINK COMMUNICATIONS, LLC 346   2016-01-26   
517-604 8   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 346   2019-01-17   
517-604 9   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 346   2016-09-26   
517-676 A MASNMIMSRSA  9323 MICHIGAN BELL TEL CO 346      
517-722 A LNNGMIXIDS0  7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 346      
517-722 0   7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 346   2017-12-08   
517-722 1   7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 346   2017-12-08   
517-722 2   7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 346   2017-12-08   
517-722 3   7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 346   2017-12-08   
517-722 4   7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 346   2017-12-08   
517-722 5   7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 346   2017-12-08   
517-722 6   7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 346   2017-12-08   
517-722 7   7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 346   2017-12-08   
517-722 8   7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 346   2017-12-08   
517-722 9   7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 346   2017-12-08   
517-833 A LNNGMIVE2MD  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346      
517-833 0   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 346   2004-12-31   
517-833 1   817J INTERACTIVE SERVICES NETWORK, INC. 346   2005-09-03   
517-833 2   7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 346   2005-09-15   
517-833 3   7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 346   2005-09-26   
517-833 4   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346   2004-12-20   
517-833 5   7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 346   2005-05-18   
517-833 6   7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 346   2005-05-18   
517-833 7   7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 346   2005-04-02   
517-833 8   829J PAETEC ITEL, LLC 346   2005-04-11   
517-833 9   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346   2005-12-29   
517-883 A LNNGMIDCMMD  460K FIRST COMMUNICATIONS, LLC 346      
517-883 0   460K FIRST COMMUNICATIONS, LLC 346   2008-03-27   
517-883 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 346   2009-09-26   
517-883 2   543C ONVOY, LLCV - MI 346   2012-05-28   
517-883 3   5562 METROPCS, INC. 346   2009-09-15   
517-883 4   543C ONVOY, LLCV - MI 346   2013-01-03   
517-883 5   516C AT&T CORP. 346   2011-09-30   
517-883 6   7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 346   2014-12-19   
517-883 7   046L CLEAR RATE COMMUNICATIONS, LLC 346   2009-11-14   
517-883 8   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 346   2014-03-03   
517-883 9   2550 123.NET, LLC 346   2011-06-13   
517-928 A LNNGMIXIAMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 346      
517-928 0   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 346   2019-06-20   
517-928 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 346   2020-05-22   
517-928 2   543C ONVOY, LLCV - MI 346   2021-03-10   
517-928 3   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 346   2020-07-31   
517-928 4   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 346   2020-01-11   
517-928 5   624H ONVOY SPECTRUM, LLC 346   2021-06-17   
517-928 6   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 346   2021-06-08   
517-928 8   5562 METROPCS, INC. 346   2022-09-05   
517-928 9   939H COMMIO, LLC 346   2022-11-05   
517-969 A LNNGMIMN16Z  829J PAETEC ITEL, LLC 346      
517-969 0   829J PAETEC ITEL, LLC 346   2006-03-10   
517-969 1   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 346   2025-08-29   
517-969 2   543C ONVOY, LLCV - MI 346   2021-03-10   
517-969 3   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346   2008-04-30   
517-969 4   318J COMCAST IP PHONE, LLC 346   2007-06-26   
517-969 5   543C ONVOY, LLCV - MI 346   2007-03-05   
517-969 6   543C ONVOY, LLCV - MI 346   2013-01-30   
517-969 7   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346   2008-05-08   
517-969 8   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346   2008-05-08   
517-969 9   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346   2007-07-26   
517-978 A MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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