Local Calling Guide

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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
312-281 4 Chicago Zone 01-Franklin IL   8709 GLOBAL CROSSING LOCAL SERVICES, INC.-IL 358      
312-281 5 Chicago Zone 01-Franklin IL   8709 GLOBAL CROSSING LOCAL SERVICES, INC.-IL 358      
312-281 6 Chicago Zone 01-Franklin IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-281 7 Chicago Zone 01-Franklin IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-281 8 Chicago Zone 01-Franklin IL   8709 GLOBAL CROSSING LOCAL SERVICES, INC.-IL 358      
312-281 9 Chicago Zone 01-Franklin IL   8709 GLOBAL CROSSING LOCAL SERVICES, INC.-IL 358      
312-282 A Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-283 A Chicago Zone 01-Franklin IL CHCGILCNDS1  8709 GLOBAL CROSSING LOCAL SERVICES, INC.-IL 358      
312-283 0 Chicago Zone 01-Franklin IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-283 1 Chicago Zone 01-Franklin IL   8709 GLOBAL CROSSING LOCAL SERVICES, INC.-IL 358      
312-283 2 Chicago Zone 01-Franklin IL   4717 PAETEC COMMUNICATIONS, INC. - IL 358   2008-10-22   
312-283 3 Chicago Zone 01-Franklin IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-283 4 Chicago Zone 01-Franklin IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-283 5 Chicago Zone 01-Franklin IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-283 6 Chicago Zone 01-Franklin IL   8709 GLOBAL CROSSING LOCAL SERVICES, INC.-IL 358      
312-283 7 Chicago Zone 01-Franklin IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358      
312-283 8 Chicago Zone 01-Franklin IL   8709 GLOBAL CROSSING LOCAL SERVICES, INC.-IL 358      
312-283 9 Chicago Zone 01-Franklin IL   8709 GLOBAL CROSSING LOCAL SERVICES, INC.-IL 358      
312-284 A Chicago Zone 01-Franklin IL CHCGILTCDS4  7056 XO ILLINOIS, INC. 358      
312-284 0 Chicago Zone 01-Franklin IL   7056 XO ILLINOIS, INC. 358      
312-284 1 Chicago Zone 01-Franklin IL   7056 XO ILLINOIS, INC. 358      
312-284 2 Chicago Zone 01-Franklin IL   7056 XO ILLINOIS, INC. 358      
312-284 3 Chicago Zone 01-Franklin IL   7056 XO ILLINOIS, INC. 358      
312-284 4 Chicago Zone 01-Franklin IL   7056 XO ILLINOIS, INC. 358      
312-284 5 Chicago Zone 01-Franklin IL   7056 XO ILLINOIS, INC. 358      
312-284 6 Chicago Zone 01-Franklin IL   7056 XO ILLINOIS, INC. 358      
312-284 7 Chicago Zone 01-Franklin IL   6529 T-MOBILE USA, INC. 358   2019-02-24   
312-284 8 Chicago Zone 01-Franklin IL   7056 XO ILLINOIS, INC. 358      
312-284 9 Chicago Zone 01-Franklin IL   6529 T-MOBILE USA, INC. 358   2019-02-24   
312-285 A Chicago Zone 01-Wabash IL BRDVILBOCM1  6664 SPRINT SPECTRUM L.P. 358      
312-285 0 Chicago Zone 01-Wabash IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2006-12-09   
312-285 1 Chicago Zone 01-Wabash IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2010-10-02   
312-285 2 Chicago Zone 01-Wabash IL   516C AT&T CORP. 358   2005-05-09   
312-285 3 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358      
312-285 4 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358      
312-285 5 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358      
312-285 6 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358      
312-285 7 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358      
312-285 8 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358      
312-285 9 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358      
312-286 A Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-287 A Chicago Zone 07-Stewart IL   6664 SPRINT SPECTRUM L.P. 358      
312-288 A Chicago Zone 01-Calumet IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-288 0 Chicago Zone 01-Calumet IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-288 1 Chicago Zone 01-Calumet IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2010-07-08   
312-288 2 Chicago Zone 01-Calumet IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-288 3 Chicago Zone 01-Calumet IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-288 4 Chicago Zone 01-Calumet IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-288 5 Chicago Zone 01-Calumet IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2010-07-08   
312-288 6 Chicago Zone 01-Calumet IL   6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2010-07-08   

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

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