Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Lake Dallas, TX

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
940-900 3 DNTNTXXAX7Y  903C ONVOY, LLC - TX 552   2020-09-23   
940-900 4 DNTNTXXAX7Y  903C ONVOY, LLC - TX 552   2020-09-23   
940-900 5 DNTNTXXAX7Y  903C ONVOY, LLC - TX 552   2023-08-12   
940-900 6 DNTNTXXAX7Y  903C ONVOY, LLC - TX 552   2021-11-21   
940-900 7 DNTNTXXAX7Y  903C ONVOY, LLC - TX 552   2021-11-21   
940-900 8 DNTNTXXAX7Y  903C ONVOY, LLC - TX 552   2021-11-21   
940-900 9 DLLSTX97X5X  965H FRACTEL, LLC 552   2020-08-20   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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