Local Calling Guide

Area code/prefix search

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

NXX: 266

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
712-266 A Sioux City IA SXCYIAMSDS0  9631 QWEST CORPORATION 630      
712-266 0 Sioux City IA   9631 QWEST CORPORATION 630      
712-266 1 Sioux City IA   9631 QWEST CORPORATION 630      
712-266 2 Sioux City IA   9631 QWEST CORPORATION 630      
712-266 3 Sioux City IA   9877 LEVEL 3 COMMUNICATIONS, LLC - IA 630   2008-04-03   
712-266 4 Sioux City IA   6529 T-MOBILE USA, INC. 630   2007-01-11   
712-266 5 Sioux City IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 630   2007-03-29   
712-266 6 Sioux City IA   6570 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA 630   2007-03-29   
712-266 7 Sioux City IA   9631 QWEST CORPORATION 630      
712-266 8 Sioux City IA   9631 QWEST CORPORATION 630      
712-266 9 Sioux City IA   9631 QWEST CORPORATION 630      

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

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