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.

Cornell, MI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
906-384 A CRNLMIMNRSA  9323 MICHIGAN BELL TEL CO 342      
906-384 1   116F PENINSULA FIBER NETWORK, LLC - MI 342   2013-09-28   
906-384 2   543C ONVOY, LLCV - MI 342   2021-03-05   
906-384 3   543C ONVOY, LLCV - MI 342   2019-01-25   
906-384 4   543C ONVOY, LLCV - MI 342   2020-09-12   
906-384 5   624H ONVOY SPECTRUM, LLC 342   2024-06-24   
906-384 6   9323 MICHIGAN BELL TEL CO 342      
906-384 7   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 342   2018-03-09   
906-384 8   543C ONVOY, LLCV - MI 342   2021-03-05   
906-384 9   516C AT&T CORP. 342   2023-09-25   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.