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.

NPA: 616 [Rate centres in NPA 616] [Dial plan for NPA 616]

NXX: 347

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
616-347 A Sand Lake MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348      
616-347 3 Sand Lake MI GDRPMIBLX8Z  2550 123.NET, LLC 348   2005-09-04   
616-347 6 Sand Lake MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2006-11-08   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.