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: 901

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
906-901 A Marquette MI MRQTMIMNX2X  624H ONVOY SPECTRUM, LLC 342      
906-901 0 Marquette MI   624H ONVOY SPECTRUM, LLC 342   2021-11-06   
906-901 1 Marquette MI   624H ONVOY SPECTRUM, LLC 342   2021-11-06   
906-901 2 Marquette MI   624H ONVOY SPECTRUM, LLC 342   2021-11-06   
906-901 3 Marquette MI   624H ONVOY SPECTRUM, LLC 342   2021-11-06   
906-901 4 Marquette MI   624H ONVOY SPECTRUM, LLC 342   2021-11-06   
906-901 5 Marquette MI   624H ONVOY SPECTRUM, LLC 342   2021-11-06   
906-901 6 Marquette MI   624H ONVOY SPECTRUM, LLC 342   2021-11-06   
906-901 7 Marquette MI   624H ONVOY SPECTRUM, LLC 342   2021-11-06   
906-901 8 Marquette MI   624H ONVOY SPECTRUM, LLC 342   2021-11-06   
906-901 9 Marquette MI   624H ONVOY SPECTRUM, LLC 342   2021-06-14   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.