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: WLLRTXWLRS2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
936-372 A Waller TX 9533 SOUTHWESTERN BELL 560      
936-372 0 Waller TX 9533 SOUTHWESTERN BELL 560      
936-372 1 Waller TX 9533 SOUTHWESTERN BELL 560      
936-372 2 Waller TX 9533 SOUTHWESTERN BELL 560      
936-372 3 Waller TX 9533 SOUTHWESTERN BELL 560      
936-372 4 Waller TX 9533 SOUTHWESTERN BELL 560      
936-372 5 Waller TX 9533 SOUTHWESTERN BELL 560      
936-372 9 Waller TX 9533 SOUTHWESTERN BELL 560      
936-389 A Waller TX 9533 SOUTHWESTERN BELL 560      
936-931 A Waller EMS TX 9533 SOUTHWESTERN BELL 560      
936-931 0 Waller EMS TX 9533 SOUTHWESTERN BELL 560      
936-931 1 Waller EMS TX 9533 SOUTHWESTERN BELL 560      
936-931 2 Waller EMS TX 9533 SOUTHWESTERN BELL 560      
936-931 3 Waller EMS TX 9533 SOUTHWESTERN BELL 560      
936-931 5 Waller EMS TX 9533 SOUTHWESTERN BELL 560      
936-931 9 Waller EMS TX 9533 SOUTHWESTERN BELL 560      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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