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: 573 [Rate centres in NPA 573] [Dial plan for NPA 573]

NXX: 274

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-274 A Potosi MO   5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 520   2025-10-20   
573-274 0 Potosi MO   5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 520   2025-10-20   

Last updated: Mon, 15 Sep 2025 02:24:40 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.