Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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OCN: 7551 AUSTIN BESTLINE COMPANY

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
512-227 8 Lockhart EMS TX   558   2014-05-16   
512-269 4 Taylor TX   558   2014-05-21   
512-281 8 Elgin EMS TX   558   2014-05-21   
512-359 1 Lockhart TX   558   2014-05-16   
512-360 6 Smithville EMS TX   558   2008-05-18   
512-492 3 Austin TX   558   2006-02-17   
512-515 2 Liberty Hill EACS TX   558   2014-05-21   
512-637 A Austin TX AUSTTX92SMD  558      
512-772 0 Bastrop TX   558   2004-08-02   
512-778 3 Liberty Hill TX   558   2014-05-21   
512-798 6 Smithville TX   558   2008-05-29   
737-224 A Austin TX AUSTTX92SMD  558      
737-224 6 Austin TX   558   2017-12-18   
737-224 7 Austin TX   558   2017-12-18   
737-224 8 Austin TX   558   2017-12-18   
737-346 A Austin TX AUSTTX92SMD  558      
737-346 0 Austin TX   558   2013-09-13   
737-610 7 Austin TX   558   2019-10-10   
737-666 1 Elgin TX   558   2014-05-21   
737-708 1 Austin TX   558   2015-12-29   
737-888 2 Taylor TX   558   2014-05-21   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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