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.

Siren, WI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
715-349 A SIRNWIXADS0  0949 SIREN TEL. CO., INC. 352      
715-809 A   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 352   2025-04-14   
715-809 7   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 352   2025-04-14   

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.