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: YRTWTXYTRL0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
361-564 A Yorktown TX 9533 SOUTHWESTERN BELL 564      
361-564 1 Yorktown TX 9533 SOUTHWESTERN BELL 564      
361-564 2 Yorktown TX 9533 SOUTHWESTERN BELL 564      
361-564 3 Yorktown TX 9533 SOUTHWESTERN BELL 564      
361-564 4 Yorktown TX 9533 SOUTHWESTERN BELL 564      
361-564 8 Yorktown TX 9533 SOUTHWESTERN BELL 564      
361-564 9 Yorktown TX 9533 SOUTHWESTERN BELL 564      

Last updated: Fri, 13 May 2022 22:16:13 UTC

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