Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: SNANTX91XOX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
210-506 A San Antonio TX 9533 SOUTHWESTERN BELL 566      

Last updated: Tue, 15 Jul 2025 18:46:49 UTC

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