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.

Lorenzo, TX

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
806-605 A LBCKTXPSX9Y  903C ONVOY, LLC - TX 544      
806-605 0 LBCKTXPSX9Y  903C ONVOY, LLC - TX 544   2018-10-12   
806-605 1 LBCKTXPSX9Y  903C ONVOY, LLC - TX 544   2019-04-22   
806-605 2 LBCKTXPSX9Y  903C ONVOY, LLC - TX 544   2019-04-22   
806-605 3 LBCKTXPSLMD  073H TELNYX LLC 544   2021-03-21   
806-605 5 LBCKTXPSX9Y  903C ONVOY, LLC - TX 544   2017-03-24   
806-605 6 LBCKTXPSX9Y  903C ONVOY, LLC - TX 544   2020-11-23   
806-605 8 LBCKTXPSX9Y  903C ONVOY, LLC - TX 544   2020-11-23   
806-605 9 LBCKTXPSXOY  624H ONVOY SPECTRUM, LLC 544   2024-04-27   
806-634 A LRNZTXXARS0  1163 VALOR TELECOMM TX, LP-TX #1 DBA WINDSTREAM COMM SW 544      

Last updated: Sat, 02 May 2026 12:20:53 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.