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: EURKKSELRS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
620-583 A Eureka KS 9533 SOUTHWESTERN BELL 532      
620-583 0 Eureka KS 9533 SOUTHWESTERN BELL 532      
620-583 1 Eureka KS 9533 SOUTHWESTERN BELL 532      
620-583 3 Eureka KS 9533 SOUTHWESTERN BELL 532      
620-583 4 Eureka KS 9533 SOUTHWESTERN BELL 532      
620-583 5 Eureka KS 9533 SOUTHWESTERN BELL 532      
620-583 6 Eureka KS 9533 SOUTHWESTERN BELL 532      
620-583 7 Eureka KS 9533 SOUTHWESTERN BELL 532      
620-583 8 Eureka KS 9533 SOUTHWESTERN BELL 532      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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