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: HAYTMOFLRSJ

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
573-359 A Hayti MO 9533 SOUTHWESTERN BELL 520      
573-359 0 Hayti MO 9533 SOUTHWESTERN BELL 520      
573-359 1 Hayti MO 9533 SOUTHWESTERN BELL 520      
573-359 2 Hayti MO 9533 SOUTHWESTERN BELL 520      
573-359 3 Hayti MO 9533 SOUTHWESTERN BELL 520      
573-359 6 Hayti MO 9533 SOUTHWESTERN BELL 520      
573-359 9 Hayti MO 9533 SOUTHWESTERN BELL 520      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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