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.
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NPA: 660 [Rate centres in NPA 660] [Dial plan for NPA 660]

NXX: 458

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
660-458 A Latham MO LTHMMOXADS0  1917 OTELCO MID-MISSOURI LLC 524      
660-458 6 Latham MO LTHMMOXADS0  1917 OTELCO MID-MISSOURI LLC 524      
660-458 8 Latham MO KSCZMODR3MD  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 524      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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