Local Calling Guide

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St Clair, MI

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
810-637 5 SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2005-05-29   
810-637 6 FLNTMICD0MD  829J PAETEC ITEL, LLC 340   2004-01-13   
810-637 7 FLNTMICD0MD  829J PAETEC ITEL, LLC 340   2009-10-26   
810-637 8 WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2005-11-15   
810-637 9   145J TERRA NOVA TELECOM INC. 340   2022-11-02   
810-740 A SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
810-740 0 SFLDMIMKBMD  516J TON80 COMMUNICATIONS, LLC 340   2022-04-05   
810-740 2 SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340   2006-04-21   
810-740 3 ANARMIMNX8X  3535 ACD TELECOM, INC. - MI 340   2005-12-10   
810-740 4 SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2006-05-06   
810-740 5 DTRTMIBASMD  516C AT&T CORP. 340   2011-11-30   
810-740 6 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2012-10-13   
810-740 7 SFLDMITODS2  543C ONVOY, LLCV - MI 340   2013-01-31   
810-740 8 DTRTMIVWDMD  624H ONVOY SPECTRUM, LLC 340   2021-06-15   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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