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.

Chatham, MI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
906-381 A MRQTMIACCM0  6695 RANGE TELECOMMUNICATIONS 342      
906-435 A HNCCMIMN3MD  543C ONVOY, LLCV - MI 342      
906-435 0   116F PENINSULA FIBER NETWORK, LLC - MI 342   2013-09-28   
906-435 2   624H ONVOY SPECTRUM, LLC 342   2024-06-24   
906-435 4   543C ONVOY, LLCV - MI 342   2020-06-08   
906-435 5   543C ONVOY, LLCV - MI 342   2021-03-27   
906-435 8   792K CHARTER IP ENABLED SERVICES, LLC 342   2018-05-14   
906-439 A CHHMMIXIPS0  0685 CHATHAM TEL. CO. 342      
906-439 1   0685 CHATHAM TEL. CO. 342      
906-439 2   0685 CHATHAM TEL. CO. 342      
906-439 3   0685 CHATHAM TEL. CO. 342      
906-439 4   0685 CHATHAM TEL. CO. 342      
906-439 5   0685 CHATHAM TEL. CO. 342      
906-439 6   0685 CHATHAM TEL. CO. 342      
906-439 7   0685 CHATHAM TEL. CO. 342      
906-439 8   0685 CHATHAM TEL. CO. 342      
906-439 9   0685 CHATHAM TEL. CO. 342      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.