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: 633

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
620-633 A Lafontaine KS LFNTKSXARS0  1810 UNITED TEL OF EASTERN KANSAS DBA CENTURYLINK 532      
620-633 0 Lafontaine KS   1810 UNITED TEL OF EASTERN KANSAS DBA CENTURYLINK 532      
620-633 1 Lafontaine KS   624H ONVOY SPECTRUM, LLC 532   2024-04-07   
620-633 3 Lafontaine KS   145J TERRA NOVA TELECOM INC. 532   2025-05-28   
620-633 4 Lafontaine KS   516J TON80 COMMUNICATIONS, LLC 532   2022-03-14   
620-633 5 Lafontaine KS   1810 UNITED TEL OF EASTERN KANSAS DBA CENTURYLINK 532      
620-633 9 Lafontaine KS   508J CENTURYLINK COMMUNICATIONS, LLC 532   2014-03-15   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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