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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Laredo, MO

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
660-286 A PRTNMOXADS0  1888 GRAND RIVER MUTUAL TEL CO 524      
660-599 A KSCYMO55X0Z  965H FRACTEL, LLC 524      
660-599 9 KSCYMO55X0Z  965H FRACTEL, LLC 524   2020-11-08   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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