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.

Bell Oak, MI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
517-468 A BLOKMIXIRP0  0726 SHIAWASSEE TEL. CO. 346      
517-468 0   0726 SHIAWASSEE TEL. CO. 346      
517-468 1   0726 SHIAWASSEE TEL. CO. 346      
517-468 2   0726 SHIAWASSEE TEL. CO. 346      
517-468 3   0726 SHIAWASSEE TEL. CO. 346      
517-468 5   145J TERRA NOVA TELECOM INC. 346   2025-07-10   
517-468 6   543C ONVOY, LLCV - MI 346   2020-06-08   
517-468 7   516J TON80 COMMUNICATIONS, LLC 346   2022-04-21   
517-468 8   543C ONVOY, LLCV - MI 346   2020-11-27   
517-468 9   543C ONVOY, LLCV - MI 346   2020-11-27   
517-972 A MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-972 2   3535 ACD TELECOM, INC. - MI 346      
517-972 3   3535 ACD TELECOM, INC. - MI 346      
517-972 4   3535 ACD TELECOM, INC. - MI 346      
517-972 5   624H ONVOY SPECTRUM, LLC 346   2021-06-17   
517-972 7   3535 ACD TELECOM, INC. - MI 346      
517-972 9   3535 ACD TELECOM, INC. - MI 346      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.