Local Calling Guide

Area code/prefix search

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Plano, TX

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
972-985 A PLANTXXBDS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      

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Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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