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: KSCYMO48DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
816-350 A Kansas City MO 9533 SOUTHWESTERN BELL 524      
816-350 0 Kansas City MO 9533 SOUTHWESTERN BELL 524      
816-350 1 Kansas City MO 9533 SOUTHWESTERN BELL 524      
816-350 2 Kansas City MO 9533 SOUTHWESTERN BELL 524      
816-350 3 Kansas City MO 9533 SOUTHWESTERN BELL 524      
816-350 4 Kansas City MO 9533 SOUTHWESTERN BELL 524      
816-350 5 Kansas City MO 9533 SOUTHWESTERN BELL 524      
816-350 6 Kansas City MO 9533 SOUTHWESTERN BELL 524      
816-350 7 Kansas City MO 9533 SOUTHWESTERN BELL 524      
816-350 8 Kansas City MO 9533 SOUTHWESTERN BELL 524      
816-373 A Kansas City MO 9533 SOUTHWESTERN BELL 524      
816-478 A Kansas City MO 9533 SOUTHWESTERN BELL 524      
816-503 A Kansas City MO 9533 SOUTHWESTERN BELL 524      
816-503 0 Kansas City MO 9533 SOUTHWESTERN BELL 524      
816-503 3 Kansas City MO 9533 SOUTHWESTERN BELL 524      
816-503 4 Kansas City MO 9533 SOUTHWESTERN BELL 524      
816-503 5 Kansas City MO 9533 SOUTHWESTERN BELL 524      
816-503 7 Kansas City MO 9533 SOUTHWESTERN BELL 524      
816-698 7 Kansas City MO 9533 SOUTHWESTERN BELL 524      
816-698 8 Kansas City MO 9533 SOUTHWESTERN BELL 524      
816-795 A Kansas City MO 9533 SOUTHWESTERN BELL 524      

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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