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: PTARTXWORS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
409-960 A Port Arthur TX 9533 SOUTHWESTERN BELL 562      
409-960 0 Port Arthur TX 9533 SOUTHWESTERN BELL 562      
409-960 3 Port Arthur TX 9533 SOUTHWESTERN BELL 562      
409-960 5 Port Arthur TX 9533 SOUTHWESTERN BELL 562      
409-960 6 Port Arthur TX 9533 SOUTHWESTERN BELL 562      
409-960 7 Port Arthur TX 9533 SOUTHWESTERN BELL 562      
409-962 A Port Arthur TX 9533 SOUTHWESTERN BELL 562      
409-963 A Port Arthur TX 9533 SOUTHWESTERN BELL 562      

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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