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 Adams, MI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
517-287 A NADMMIXIDS0  4417 FRONTIER COMMUNICATIONS OF MICHIGAN, INC. 346      
517-698 A MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-698 0   624H ONVOY SPECTRUM, LLC 346   2024-05-10   
517-698 1 LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2021-06-18   
517-698 2 LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2021-07-11   
517-698 3 MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-698 5 LNNGMIMN02Z  318J COMCAST IP PHONE, LLC 346   2008-08-28   
517-698 6 LNNGMIMNX8Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 346   2016-01-22   
517-698 8 LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2018-10-12   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.