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: 771

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
507-771 A Tyler MN ROCHMNROUMD  184D ONVOY, LLC - MN 620      
507-771 2 Tyler MN ROCHMNROXQX  624H ONVOY SPECTRUM, LLC 620      
507-771 4 Tyler MN ROCHMNROTMD  5256 LEVEL 3 COMMUNICATIONS, LLC - MN 620      
507-771 5 Tyler MN ROCHMNROUMD  184D ONVOY, LLC - MN 620      
507-771 7 Tyler MN OWTNMNOWYMD  508J CENTURYLINK COMMUNICATIONS, LLC 620      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.