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.

NPA: 620 [Rate centres in NPA 620] [Dial plan for NPA 620]

NXX: 450

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
620-450 A Pratt KS PRTTKSNIRS0  9533 SOUTHWESTERN BELL 532      
620-450 0 Pratt KS WCHTKSTPNMD  073H TELNYX LLC 532   2018-07-11   
620-450 1 Pratt KS PRTTKSNIRS0  9533 SOUTHWESTERN BELL 532      
620-450 2 Pratt KS PRTTKSNIRS0  9533 SOUTHWESTERN BELL 532      
620-450 3 Pratt KS WCHTKSBRX5Y  7593 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - KS 532   2010-09-15   
620-450 4 Pratt KS WCHTKSMBX2X  2240 LEVEL 3 COMMUNICATIONS, LLC - KS 532   2005-01-14   
620-450 5 Pratt KS WCHTKSBRDMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 532   2010-06-28   
620-450 6 Pratt KS WCHTKSBRX5X  986E BANDWIDTH.COM CLEC, LLC - KS 532   2008-11-26   
620-450 7 Pratt KS PRTTKSNIRS0  9533 SOUTHWESTERN BELL 532      
620-450 8 Pratt KS PRTTKSNIRS0  9533 SOUTHWESTERN BELL 532      
620-450 9 Pratt KS PRTTKSNIRS0  9533 SOUTHWESTERN BELL 532      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.