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: WLRDMOSHRS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
417-742 A Willard MO 9533 SOUTHWESTERN BELL 522      
417-742 1 Willard MO 9533 SOUTHWESTERN BELL 522      
417-742 2 Willard MO 9533 SOUTHWESTERN BELL 522      
417-742 3 Willard MO 9533 SOUTHWESTERN BELL 522      
417-742 4 Willard MO 9533 SOUTHWESTERN BELL 522      
417-742 5 Willard MO 9533 SOUTHWESTERN BELL 522      
417-742 9 Willard MO 9533 SOUTHWESTERN BELL 522      

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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