Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 512 [Rate centres in NPA 512] [Dial plan for NPA 512]

NXX: 401

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
512-401 A Austin TX AUSTTXJODS0  9533 SOUTHWESTERN BELL 558      
512-401 0 Austin TX   145J TERRA NOVA TELECOM INC. 558   2024-09-14   
512-401 1 Austin TX   9533 SOUTHWESTERN BELL 558      
512-401 2 Austin TX   9533 SOUTHWESTERN BELL 558      
512-401 3 Austin TX   793K TWC IP ENABLED SERVICES, LLC 558   2005-12-15   
512-401 4 Austin TX   9533 SOUTHWESTERN BELL 558      
512-401 5 Austin TX   9533 SOUTHWESTERN BELL 558      
512-401 6 Austin TX   9533 SOUTHWESTERN BELL 558      
512-401 7 Austin TX   6529 T-MOBILE USA, INC. 558   2007-11-12   
512-401 8 Austin TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2020-08-13   
512-401 9 Austin TX   9533 SOUTHWESTERN BELL 558      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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