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: TRMNTXTERS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
432-488 A Terminal TX 9533 SOUTHWESTERN BELL 542      
432-495 A Terminal TX 9533 SOUTHWESTERN BELL 542      
432-499 A Terminal TX 9533 SOUTHWESTERN BELL 542      
432-560 A Terminal TX 9533 SOUTHWESTERN BELL 542      
432-561 A Terminal TX 9533 SOUTHWESTERN BELL 542      
432-563 A Terminal TX 9533 SOUTHWESTERN BELL 542      
432-567 A Terminal TX 9533 SOUTHWESTERN BELL 542      
432-640 A Terminal 640 TX 9533 SOUTHWESTERN BELL 542      
432-741 A Terminal TX 9533 SOUTHWESTERN BELL 542      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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