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: 507 [Rate centres in NPA 507] [Dial plan for NPA 507]

NXX: 885

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
507-885 A Butterfield MN ROCHMNROUMD  184D ONVOY, LLC - MN 620      
507-885 5 Butterfield MN ROCHMNROUMD  184D ONVOY, LLC - MN 620   2021-03-06   
507-885 6 Butterfield MN ROCHMNROXQX  624H ONVOY SPECTRUM, LLC 620   2021-06-21   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.