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: BSTRTXBSBMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
737-350 A Bastrop TX 732J NUSO, LLC 558   2023-02-15   
737-350 0 Bastrop TX 732J NUSO, LLC 558   2023-01-14   

Last updated: Sun, 30 Apr 2023 22:01:48 UTC

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