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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: AUSUTXYYPS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
512-220 A Austin TX 7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-240 A Georgetown TX 7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-504 A Kyle PPCP TX 7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-523 A Buda PPCP TX 7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-524 A Austin TX 7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-538 A Austin TX 7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-546 A Dale/Lytton Springs TX 7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-600 A Austin TX 7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-607 A Dripping Springs TX 7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-628 A Austin TX 7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-642 A Hutto TX 7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-722 A Wimberley TX 7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
737-704 A Austin TX 7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      

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

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