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: STCHMO63DSA

Remotes:

Switch Switch name Switch type
PRSXMO68RS0  PORTAGE DES SIOUX  RSC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
636-255 A St Charles MCA3 MO 9533 SOUTHWESTERN BELL 520      
636-443 A St Charles MCA3 MO 9533 SOUTHWESTERN BELL 520      
636-723 A St Charles MO 9533 SOUTHWESTERN BELL 520      
636-724 A St Charles MO 9533 SOUTHWESTERN BELL 520      
636-896 A St Charles MCA3 MO 9533 SOUTHWESTERN BELL 520      
636-916 A St Charles MCA3 MO 9533 SOUTHWESTERN BELL 520      
636-925 A St Charles MO 9533 SOUTHWESTERN BELL 520      
636-940 A St Charles MCA3 MO 9533 SOUTHWESTERN BELL 520      
636-946 A St Charles MCA3 MO 9533 SOUTHWESTERN BELL 520      
636-947 A St Charles MCA3 MO 9533 SOUTHWESTERN BELL 520      
636-949 A St Charles MCA3 MO 9533 SOUTHWESTERN BELL 520      

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

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