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: BLSPMOCADS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
816-220 A Blue Springs MO 9533 SOUTHWESTERN BELL 524      
816-224 A Blue Springs MO 9533 SOUTHWESTERN BELL 524      
816-228 A Blue Springs MO 9533 SOUTHWESTERN BELL 524      
816-229 A Blue Springs MO 9533 SOUTHWESTERN BELL 524      
816-443 A Grain Valley MO 9533 SOUTHWESTERN BELL 524      
816-598 A Blue Springs MO 9533 SOUTHWESTERN BELL 524      
816-622 A Blue Springs MO 9533 SOUTHWESTERN BELL 524      
816-655 A Blue Springs MO 9533 SOUTHWESTERN BELL 524      
816-847 A Grain Valley MCA3 MO 9533 SOUTHWESTERN BELL 524      

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

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