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: 417 [Rate centres in NPA 417] [Dial plan for NPA 417]

NXX: 803

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
417-803 A Miller MO SPFDMOTLXMX  593K MCC TELEPHONY LLC 522      
417-803 1 Miller MO SPFDMOTLXMX  593K MCC TELEPHONY LLC 522   2018-05-10   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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