Local Calling Guide

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

NXX: 276

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
512-276 A Austin TX AUSTTXWADS0  9533 SOUTHWESTERN BELL 558      
512-276 0 Austin TX   6529 T-MOBILE USA, INC. 558   2004-12-12   
512-276 1 Austin TX AUSTTXWADS0  9533 SOUTHWESTERN BELL 558      
512-276 2 Austin TX AUSXTXZR0MD  793K TWC IP ENABLED SERVICES, LLC 558   2007-09-12   
512-276 3 Austin TX AUSTTXWADS0  9533 SOUTHWESTERN BELL 558      
512-276 4 Austin TX   6529 T-MOBILE USA, INC. 558   2005-08-26   
512-276 5 Austin TX AUSTTXGRDS7  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558   2003-10-04   
512-276 6 Austin TX AUSTTXUH5MD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 558   2006-09-01   
512-276 7 Austin TX AUSTTXWADS0  9533 SOUTHWESTERN BELL 558      
512-276 8 Austin TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2004-08-07   
512-276 9 Austin TX AUSTTXWADS0  9533 SOUTHWESTERN BELL 558      

Last updated: Sun, 17 May 2026 03:26:51 UTC

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