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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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

NXX: 431

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
417-431 A Metz MO SPFDMODL5MD  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 522   2024-05-21   
417-431 7 Metz MO SPFDMODL5MD  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 522   2024-05-21   

Last updated: Tue, 07 Oct 2025 16:47:53 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.