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: 503

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
507-503 A Adams MN   184D ONVOY, LLC - MN 620      
507-503 0 Adams MN ROCHMNROXRX  073H TELNYX LLC 620      
507-503 1 Adams MN ROCHMNROXQX  624H ONVOY SPECTRUM, LLC 620      
507-503 2 Adams MN ROCHMNROXQX  624H ONVOY SPECTRUM, LLC 620      
507-503 3 Adams MN   184D ONVOY, LLC - MN 620      
507-503 4 Adams MN ROCHMNROXQX  624H ONVOY SPECTRUM, LLC 620      
507-503 6 Adams MN ROCHMNROXQX  624H ONVOY SPECTRUM, LLC 620      
507-503 7 Adams MN OWTNMNOWYMD  508J CENTURYLINK COMMUNICATIONS, LLC 620      
507-503 8 Adams MN ROCHMNHI9MD  939H COMMIO, LLC 620      

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.