Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

North Sylvania, MI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
734-888 A SYVNOHXADS0  0615 FRONTIER NORTH, INC. - OH 326      
734-888 1 SYVNOHXADS0  0615 FRONTIER NORTH, INC. - OH 326      
734-888 2 TOLEOHAC3MD  543C ONVOY, LLC - MI 326   2020-11-20   
734-888 3 TOLDOHIR3MD  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 326   2014-03-28   
734-888 4 TOLDOHIR3MD  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 326   2005-04-01   
734-888 5 TOLDOHPGPS0  7608 BUCKEYE TELESYSTEM, INC. - OH 326   2005-11-05   
734-888 6 TOLEOHAC3MD  543C ONVOY, LLC - MI 326   2020-11-20   
734-888 7 NPLNOHXARMD  7575 CENTURYLINK COMMUNICATIONS LLC 326   2014-04-14   
734-888 8 TOLDOH21XUX  991E BANDWIDTH.COM CLEC, LLC - MI 326   2012-08-16   
734-888 9 TOLEOHAC3MD  543C ONVOY, LLC - MI 326   2017-06-16   

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.