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: 515 [Rate centres in NPA 515] [Dial plan for NPA 515]

NXX: 315

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
515-315 A Blairsburg IA DESMIADTX1X  624H ONVOY SPECTRUM, LLC 632      
515-315 2 Blairsburg IA DESMIADTX2Y  506J TWILIO INTERNATIONAL, INC. 632   2021-10-24   
515-315 3 Blairsburg IA DESMIADTX1X  624H ONVOY SPECTRUM, LLC 632   2021-08-21   
515-315 5 Blairsburg IA DESMIADTX1X  624H ONVOY SPECTRUM, LLC 632   2021-10-30   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.