Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 312 [Rate centres in NPA 312] [Dial plan for NPA 312]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
312-730 A Chicago Zone 01-Wabash IL CHCGILCLDSC  7421 AT&T LOCAL 358      
312-730 0 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2007-07-27   
312-730 1 Chicago Zone 01-Wabash IL   7421 AT&T LOCAL 358      
312-730 2 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2007-07-27   
312-730 3 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2004-08-23   
312-730 4 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2004-08-23   
312-730 5 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2004-08-23   
312-730 6 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2004-08-23   
312-730 7 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2004-08-23   
312-730 8 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2005-03-19   
312-730 9 Chicago Zone 01-Wabash IL   7421 AT&T LOCAL 358      

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

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