Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: DLLSTXEMDS0

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
972-861 1 Dallas TX 9533 SOUTHWESTERN BELL 552      
972-863 A Dallas TX 9533 SOUTHWESTERN BELL 552      
972-863 6 Dallas TX 9533 SOUTHWESTERN BELL 552      

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Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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