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: MNCHMO59DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
636-207 A Manchester MCA3 MO 9533 SOUTHWESTERN BELL 520      
636-227 A Manchester MCA3 MO 9533 SOUTHWESTERN BELL 520      
636-230 A Manchester MCA3 MO 9533 SOUTHWESTERN BELL 520      
636-256 A Manchester MCA3 MO 9533 SOUTHWESTERN BELL 520      
636-386 A Manchester MCA3 MO 9533 SOUTHWESTERN BELL 520      
636-391 A Manchester MCA3 MO 9533 SOUTHWESTERN BELL 520      
636-394 A Manchester MCA3 MO 9533 SOUTHWESTERN BELL 520      
636-527 A Manchester MO 9533 SOUTHWESTERN BELL 520      
636-891 A Manchester MCA3 MO 9533 SOUTHWESTERN BELL 520      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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