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: 223

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
715-223 A Colby WI CLBYWIXARS0  0886 FRONTIER NORTH INC. - WI 350      
715-223 0 Colby WI   0886 FRONTIER NORTH INC. - WI 350      
715-223 1 Colby WI   0886 FRONTIER NORTH INC. - WI 350      
715-223 2 Colby WI   0886 FRONTIER NORTH INC. - WI 350      
715-223 3 Colby WI   0886 FRONTIER NORTH INC. - WI 350      
715-223 4 Colby WI   0886 FRONTIER NORTH INC. - WI 350      
715-223 5 Colby WI   6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 350   2006-05-04   
715-223 6 Colby WI   0886 FRONTIER NORTH INC. - WI 350      
715-223 7 Colby WI   6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 350   2011-02-14   
715-223 8 Colby WI   0886 FRONTIER NORTH INC. - WI 350      
715-223 9 Colby WI   6529 T-MOBILE USA, INC. 350   2006-10-25   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.