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.
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Switch: BNTRMOFLRS4

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
573-358 A Bonne Terre MO 9533 SOUTHWESTERN BELL 520      
573-358 0 Bonne Terre MO 9533 SOUTHWESTERN BELL 520      
573-358 1 Bonne Terre MO 9533 SOUTHWESTERN BELL 520      
573-358 2 Bonne Terre MO 9533 SOUTHWESTERN BELL 520      
573-358 3 Bonne Terre MO 9533 SOUTHWESTERN BELL 520      
573-358 4 Bonne Terre MO 9533 SOUTHWESTERN BELL 520      
573-358 5 Bonne Terre MO 9533 SOUTHWESTERN BELL 520      
573-358 7 Bonne Terre MO 9533 SOUTHWESTERN BELL 520      
573-358 8 Bonne Terre MO 9533 SOUTHWESTERN BELL 520      

Last updated: Sat, 15 Nov 2025 03:38:44 UTC

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