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: 320 [Rate centres in NPA 320] [Dial plan for NPA 320]

NXX: 456

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
320-456 A Raymond MN STCDMNTOX3X  184D ONVOY, LLC - MN 626      
320-456 0 Raymond MN STCDMNTOX3X  184D ONVOY, LLC - MN 626   2016-05-06   
320-456 1 Raymond MN STCDMNTOX3X  184D ONVOY, LLC - MN 626   2017-11-09   
320-456 2 Raymond MN STCDMNTOX3X  184D ONVOY, LLC - MN 626   2005-02-21   
320-456 3 Raymond MN STCDMNTOX3X  184D ONVOY, LLC - MN 626   2019-10-28   
320-456 5 Raymond MN MRRSMNFTRS1  2629 FEDERATED TELEPHONE COOPERATIVE - MN 626   2024-01-19   
320-456 6 Raymond MN   2836 FARMERS MUTUAL TELEPHONE COMPANY - MN 626   2024-03-10   
320-456 7 Raymond MN STCDMNTOXHX  508J CENTURYLINK COMMUNICATIONS, LLC 626   2017-06-22   
320-456 8 Raymond MN STCDMNTOXTX  073H TELNYX LLC 626   2020-07-23   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.