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.

Lynndyl, UT

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
435-266 A WVCYUT14DS1  871E ONVOY, LLC - UT 660      
435-266 0   871E ONVOY, LLC - UT 660   2022-11-04   
435-266 1   871E ONVOY, LLC - UT 660   2022-01-09   
435-266 2   516J TON80 COMMUNICATIONS, LLC 660   2021-06-14   
435-266 3   871E ONVOY, LLC - UT 660   2021-10-31   
435-266 4   871E ONVOY, LLC - UT 660   2018-12-17   
435-266 5   871E ONVOY, LLC - UT 660   2021-12-09   
435-266 6   871E ONVOY, LLC - UT 660   2021-06-17   
435-266 7   871E ONVOY, LLC - UT 660   2021-08-26   
435-266 8   871E ONVOY, LLC - UT 660   2022-01-09   
435-266 9   871E ONVOY, LLC - UT 660   2022-11-04   
435-857 A LYNDUTXCRS1  4429 CITIZENS TELECOM-UTAH DBA FRONTIER COMM OF UT 660      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.