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-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
307-293 A Guernsey WY 450F ONVOY, LLC - WY 646   2021-04-01   
308-310 A Scottsbluff NE 549E ONVOY, LLC - NE 646   2021-02-22   
308-401 A Lyman NE 549E ONVOY, LLC - NE 646   2021-04-11   

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

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