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: 337

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
320-337 A Atwater MN STCDMNTOX3X  184D ONVOY, LLC - MN 626      
320-337 1 Atwater MN STCDMNTOX3X  184D ONVOY, LLC - MN 626      
320-337 2 Atwater MN STCDMNTOX3X  184D ONVOY, LLC - MN 626      
320-337 3 Atwater MN STCDMNTOX3X  184D ONVOY, LLC - MN 626      
320-337 4 Atwater MN STCDMNTOXTX  073H TELNYX LLC 626      
320-337 5 Atwater MN STCDMNTOX3X  184D ONVOY, LLC - MN 626      
320-337 6 Atwater MN STCDMNTOXNX  624H ONVOY SPECTRUM, LLC 626      
320-337 7 Atwater MN STCDMNTOX3X  184D ONVOY, LLC - MN 626      
320-337 8 Atwater MN STCDMNTOX3X  184D ONVOY, LLC - MN 626      
320-337 9 Atwater MN STCDMNTOXXX  719F MCC TELEPHONY OF MINNESOTA, LLC - MN 626      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.