Local Calling Guide

Area code/prefix search

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

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
346-353 A Houston TX 996H AIRESPRING, INC. 560      
346-353 0 Houston TX 996H AIRESPRING, INC. 560   2018-09-07   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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