Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 660 [Rate centres in NPA 660] [Dial plan for NPA 660]

NXX: 434

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
660-434 A Knox City MO HRLDMOXADS0  1914 MARK TWAIN RURAL TEL. CO. 524      

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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