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: 574 [Rate centres in NPA 574] [Dial plan for NPA 574]

NXX: 357

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
574-357 A Culver IN SBNDIN01X7Y  478J NUSO, LLC 332      
574-357 1 Culver IN SBNDIN01X7Y  478J NUSO, LLC 332   2020-11-26   
574-357 3 Culver IN SBNDIN01X7Y  478J NUSO, LLC 332   2023-12-29   
574-357 7 Culver IN SBNDIN01X7Y  478J NUSO, LLC 332   2023-12-29   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.