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: AUSWTXGXBMD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
737-932 9 Austin TX 6529 T-MOBILE USA, INC. 558   2013-07-02   
737-999 1 Buda TX 6529 T-MOBILE USA, INC. 558   2014-08-01   
737-999 2 Buda TX 6529 T-MOBILE USA, INC. 558   2014-11-09   
737-999 3 Buda TX 6529 T-MOBILE USA, INC. 558   2016-05-23   

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

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