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: 339

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
906-339 A Champion MI CHMPMIMNRSA  9323 MICHIGAN BELL TEL CO 342      
906-339 1 Champion MI MNSGMIXJDS2  116F PENINSULA FIBER NETWORK, LLC - MI 342   2013-09-28   
906-339 2 Champion MI CHMPMIMNRSA  9323 MICHIGAN BELL TEL CO 342      
906-339 3 Champion MI HNCCMIMN3MD  543C ONVOY, LLCV - MI 342   2019-01-25   
906-339 4 Champion MI CHMPMIMNRSA  9323 MICHIGAN BELL TEL CO 342      
906-339 5 Champion MI BRLDMIMNBMD  516C AT&T CORP. 342   2023-09-25   
906-339 6 Champion MI MRQTMIMNX2X  624H ONVOY SPECTRUM, LLC 342   2024-06-24   
906-339 7 Champion MI MRQTMIAQDS0  4632 TELNET WORLDWIDE, INC. 342   2005-09-04   
906-339 8 Champion MI BARGMIXJDS0  4253 BARAGA TELEPHONE COMPANY 342   2010-06-15   
906-339 9 Champion MI HNCCMIMN3MD  543C ONVOY, LLCV - MI 342   2020-09-12   

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.