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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Switch: AUSTTXGR07Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
512-305 A Austin TX 516C AT&T CORP. 558      
512-714 A Adamsville TX 516C AT&T CORP. 558   2010-01-17   

Last updated: Sat, 29 Jun 2019 02:32:58 UTC

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