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: 534

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
417-534 A Willow Springs MO   5562 METROPCS, INC. 522   2025-05-08   
417-534 8 Willow Springs MO   5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 522   2025-07-15   
417-534 9 Willow Springs MO   5562 METROPCS, INC. 522   2025-05-08   

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.