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: 840

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
620-840 A Harper KS HRPRKSMARS0  9533 SOUTHWESTERN BELL 532      
620-840 0 Harper KS HRPRKSMARS0  9533 SOUTHWESTERN BELL 532      
620-840 1 Harper KS   6532 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KS 532   2006-03-06   
620-840 2 Harper KS WCHTKSMBX2X  2240 LEVEL 3 COMMUNICATIONS, LLC - KS 532   2006-09-08   
620-840 4 Harper KS   145J TERRA NOVA TELECOM INC. 532   2024-02-15   
620-840 6 Harper KS WCHTKSTPJMD  8995 TELEPORT COMMUNICATIONS AMERICA, LLC - KS 532   2020-11-09   
620-840 8 Harper KS WCHTKSBRX0X  205F ONVOY, LLC - KS 532   2019-06-09   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.