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: 670

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
512-670 A Austin TX AUSTTXPFDS0  9533 SOUTHWESTERN BELL 558      
512-670 0 Austin TX   9533 SOUTHWESTERN BELL 558   2000-10-16   
512-670 1 Austin TX   9533 SOUTHWESTERN BELL 558   2001-12-21   
512-670 2 Austin TX   9533 SOUTHWESTERN BELL 558   2000-10-16   
512-670 3 Austin TX   9533 SOUTHWESTERN BELL 558   2001-12-21   
512-670 4 Austin TX   9533 SOUTHWESTERN BELL 558      
512-670 5 Austin TX   9533 SOUTHWESTERN BELL 558   2000-11-27   
512-670 6 Austin TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2006-06-23   
512-670 7 Austin TX   9533 SOUTHWESTERN BELL 558   2000-10-16   
512-670 8 Austin TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 558   2007-09-24   
512-670 9 Austin TX   9533 SOUTHWESTERN BELL 558      

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

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