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: 906 [Rate centres in NPA 906] [Dial plan for NPA 906]

NXX: 243

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
906-243 A Mass MI MNSGMIXJDS2  116F PENINSULA FIBER NETWORK, LLC - MI 342      
906-243 0 Mass MI MNSGMIXJDS2  116F PENINSULA FIBER NETWORK, LLC - MI 342   2013-11-23   
906-243 1 Mass MI   792K CHARTER IP ENABLED SERVICES, LLC 342   2019-09-03   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.