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: 715 [Rate centres in NPA 715] [Dial plan for NPA 715]

NXX: 604

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
715-604 A Manitowish Waters WI WAUSWIXAOMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 350      
715-604 2 Manitowish Waters WI WAUSWIXAOMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 350      
715-604 4 Manitowish Waters WI RHNLWIXA9MD  225C ONVOY, LLC - WI 350   2024-03-25   
715-604 9 Manitowish Waters WI WAUSWIXAOMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 350   2015-11-14   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.