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: STLSMO04RPA

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
314-361 A St Louis MO 9533 SOUTHWESTERN BELL 520      
314-367 A St Louis MO 9533 SOUTHWESTERN BELL 520      
314-454 A St Louis MO 9533 SOUTHWESTERN BELL 520      
314-758 A St Louis MO 9533 SOUTHWESTERN BELL 520      
314-823 A St Louis MO 9533 SOUTHWESTERN BELL 520      
314-826 A St Louis MO 9533 SOUTHWESTERN BELL 520      
314-829 A St Louis MO 9533 SOUTHWESTERN BELL 520      
314-848 A St Louis MO 9533 SOUTHWESTERN BELL 520      
314-855 A St Louis MO 9533 SOUTHWESTERN BELL 520      
314-879 A St Louis MO 9533 SOUTHWESTERN BELL 520      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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