Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 620 [Rate centres in NPA 620] [Dial plan for NPA 620]

NXX: 510

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
620-510 A Sublette KS SBLTKSORRL0  9533 SOUTHWESTERN BELL 532      
620-510 0 Sublette KS   9533 SOUTHWESTERN BELL 532      
620-510 1 Sublette KS   2240 LEVEL 3 COMMUNICATIONS, LLC - KS 532   2006-09-08   
620-510 2 Sublette KS   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 532   2007-03-05   
620-510 3 Sublette KS   018H PEERLESS NETWORK OF KANSAS, LLC - KS 532   2016-02-20   
620-510 4 Sublette KS   205F ONVOY, LLC - KS 532   2020-10-19   
620-510 5 Sublette KS   516C AT&T CORP. 532   2013-02-23   
620-510 6 Sublette KS   205F ONVOY, LLC - KS 532   2020-10-19   
620-510 7 Sublette KS   508J CENTURYLINK COMMUNICATIONS, LLC 532   2014-03-13   
620-510 8 Sublette KS   073H TELNYX LLC 532   2018-07-11   
620-510 9 Sublette KS   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 532   2014-02-15   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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