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: PRTTKSNIRS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
620-450 A Pratt KS 9533 SOUTHWESTERN BELL 532      
620-450 1 Pratt KS 9533 SOUTHWESTERN BELL 532      
620-450 2 Pratt KS 9533 SOUTHWESTERN BELL 532      
620-450 7 Pratt KS 9533 SOUTHWESTERN BELL 532      
620-450 8 Pratt KS 9533 SOUTHWESTERN BELL 532      
620-450 9 Pratt KS 9533 SOUTHWESTERN BELL 532      
620-508 A Pratt KS 9533 SOUTHWESTERN BELL 532      
620-508 0 Pratt KS 9533 SOUTHWESTERN BELL 532      
620-672 A Pratt KS 9533 SOUTHWESTERN BELL 532      
620-770 A Pratt KS 9533 SOUTHWESTERN BELL 532      
620-770 0 Pratt KS 9533 SOUTHWESTERN BELL 532      
620-770 1 Pratt KS 9533 SOUTHWESTERN BELL 532      
620-770 2 Pratt KS 9533 SOUTHWESTERN BELL 532      
620-770 3 Pratt KS 9533 SOUTHWESTERN BELL 532      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.