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.

Trenary, MI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
906-254 A MNSGMIXJDS2  116F PENINSULA FIBER NETWORK, LLC - MI 342      
906-254 0   116F PENINSULA FIBER NETWORK, LLC - MI 342   2013-11-23   
906-254 1   543C ONVOY, LLCV - MI 342   2023-09-03   
906-254 2   543C ONVOY, LLCV - MI 342   2020-09-07   
906-254 3   543C ONVOY, LLCV - MI 342   2021-02-03   
906-254 4   543C ONVOY, LLCV - MI 342   2021-02-03   
906-254 5   543C ONVOY, LLCV - MI 342   2020-06-08   
906-254 6   543C ONVOY, LLCV - MI 342   2021-06-18   
906-254 7   543C ONVOY, LLCV - MI 342   2021-07-11   
906-254 8   543C ONVOY, LLCV - MI 342   2021-12-13   
906-254 9   624H ONVOY SPECTRUM, LLC 342   2024-08-05   
906-446 A TRNYMIXIRP0  0685 CHATHAM TEL. CO. 342      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.