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]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
312-538 1 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2017-09-04   
312-538 2 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2017-09-04   
312-538 3 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2017-09-04   
312-538 4 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2017-09-04   
312-538 5 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2017-09-04   
312-538 6 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2017-09-04   
312-538 7 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2017-09-04   
312-538 8 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2017-09-04   
312-538 9 Chicago Zone 01-Calumet IL   5562 METRO PCS, INC. 358   2017-09-04   
312-539 A Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358      
312-539 0 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-03-11   
312-539 1 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-03-11   
312-539 2 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-03-11   
312-539 3 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-03-11   
312-539 4 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-03-11   
312-539 5 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-03-11   
312-539 6 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-03-11   
312-539 7 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-03-11   
312-539 8 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-03-11   
312-539 9 Chicago Zone 01-Calumet IL   6529 T-MOBILE USA, INC. 358   2016-03-11   
312-540 A Chicago Zone 01-Lakeshore IL CHCGILLRDS0  9329 AMERITECH ILLINOIS 358      
312-541 A Chicago Zone 01-Franklin IL CHCGILFRDS0  9329 AMERITECH ILLINOIS 358      
312-542 A Chicago Zone 01-Wabash IL CHCGILWBDS3  9329 AMERITECH ILLINOIS 358      
312-543 A Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-544 A Chicago Zone 01-Canal IL CHCGILCLDS3  9329 AMERITECH ILLINOIS 358      
312-544 0 Chicago Zone 01-Canal IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-11-27   
312-544 1 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-544 2 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-544 3 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-544 4 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-544 5 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-544 6 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-544 7 Chicago Zone 01-Canal IL   9329 AMERITECH ILLINOIS 358      
312-544 8 Chicago Zone 01-Canal IL   5447 ACCESS ONE, INC. - IL 358   2007-02-02   
312-544 9 Chicago Zone 01-Canal IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-545 A Chicago Zone 01-Wabash IL BRDVILBOCM1  6664 SPRINT SPECTRUM L.P. 358      
312-545 0 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358   2007-09-07   
312-545 1 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358      
312-545 2 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358   2007-09-07   
312-545 3 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358      
312-545 4 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358      
312-545 5 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358      
312-545 6 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358      
312-545 7 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358      
312-545 8 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358      
312-545 9 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358      
312-546 A Chicago Zone 01-Wabash IL CHCGILGMRS0  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-546 0 Chicago Zone 01-Wabash IL   7056 XO ILLINOIS, INC. 358   2010-10-27   
312-546 1 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358   2004-01-11   
312-546 2 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358   2004-10-22   

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

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