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: 712 [Rate centres in NPA 712] [Dial plan for NPA 712]

NXX: 574

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
712-574 A Sioux City IA SXCYIADTRMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 630      
712-574 0 Sioux City IA SXCYIADTRMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 630      
712-574 1 Sioux City IA SXCYIADTRMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 630      
712-574 2 Sioux City IA SXCYIADTRMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 630      
712-574 3 Sioux City IA SXCYIADTRMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 630   2003-10-28   
712-574 4 Sioux City IA SXCYIADTRMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 630   2004-09-25   
712-574 5 Sioux City IA SXCYIADTRMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 630   2004-12-17   
712-574 6 Sioux City IA SXCYIADTRMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 630   2005-05-12   
712-574 7 Sioux City IA SXCYIADTRMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 630   2006-01-25   
712-574 8 Sioux City IA SXCYIA78X1X  9877 LEVEL 3 COMMUNICATIONS, LLC - IA 630   2008-12-10   
712-574 9 Sioux City IA SXCYIADTRMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 630      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.