Local Calling Guide

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OCN: 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
312-238 5 Chicago Zone 01-Calumet IL OKBRILOAXEX  358      
312-242 A Chicago Zone 01-Wabash IL CHCGILCGDS1  358      
312-242 0 Chicago Zone 01-Wabash IL CHCGILCGDS1  358      
312-253 5 Chicago Zone 01-Calumet IL CHCGILCLDS7  358   2010-06-10   
312-253 6 Chicago Zone 01-Calumet IL CHCGILCLDS7  358   2010-06-10   
312-291 5 Chicago Zone 01-Wabash IL CHCGILCGDS1  358   2006-01-20   
312-319 6 Chicago Zone 01-Calumet IL OKBRILOAXEX  358   2017-06-20   
312-340 2 Chicago Zone 01-Calumet IL CHCGILCLDS7  358   2011-11-23   
312-340 3 Chicago Zone 01-Calumet IL CHCGILCLDS7  358   2011-11-23   
312-351 6 Chicago Zone 01-Wabash IL CHCGILCLDS7  358   2010-04-12   
312-351 7 Chicago Zone 01-Wabash IL CHCGILCLDS7  358   2010-04-12   
312-351 8 Chicago Zone 01-Wabash IL CHCGILCLDS7  358   2010-04-12   
312-373 5 Chicago Zone 01-Calumet IL OKBRILOAXEX  358      
312-383 A Chicago Zone 01-Calumet IL CHCGILCGDS1  358      
312-383 5 Chicago Zone 01-Calumet IL CHCGILCGDS1  358   2016-03-02   
312-383 6 Chicago Zone 01-Calumet IL CHCGILCGDS1  358   2016-03-02   
312-392 3 Chicago Zone 01-Calumet IL OKBRILOAXEX  358   2017-12-21   
312-392 9 Chicago Zone 01-Calumet IL OKBRILOAXEX  358   2017-12-21   
312-395 A Chicago Zone 01-Calumet IL OKBRILOAXEX  358      
312-395 9 Chicago Zone 01-Calumet IL OKBRILOAXEX  358      
312-423 0 Chicago Zone 01-Calumet IL OKBRILOAXEX  358   2022-06-16   
312-429 8 Chicago Zone 01-Calumet IL OKBRILOAXEX  358      
312-469 1 Chicago Zone 01-Superior IL CHCGILCLDS7  358   2001-08-16   
312-469 5 Chicago Zone 01-Superior IL CHCGILCLDS7  358   2001-08-16   
312-469 6 Chicago Zone 01-Superior IL CHCGILCLDS7  358   2001-08-16   
312-477 4 Chicago Zone 01-Calumet IL OKBRILOAXEX  358   2011-02-14   
312-479 A Chicago Zone 01-Calumet IL OKBRILOAXEX  358      
312-479 9 Chicago Zone 01-Calumet IL OKBRILOAXEX  358      
312-503 A Chicago Zone 01-Calumet IL CHCGILCGDS1  358      
312-503 0 Chicago Zone 01-Calumet IL CHCGILCGDS1  358      
312-503 1 Chicago Zone 01-Calumet IL CHCGILCGDS1  358      
312-503 2 Chicago Zone 01-Calumet IL CHCGILCGDS1  358      
312-503 3 Chicago Zone 01-Calumet IL CHCGILCGDS1  358      
312-503 4 Chicago Zone 01-Calumet IL CHCGILCGDS1  358      
312-503 5 Chicago Zone 01-Calumet IL CHCGILCGDS1  358      
312-503 6 Chicago Zone 01-Calumet IL CHCGILCGDS1  358      
312-503 7 Chicago Zone 01-Calumet IL CHCGILCGDS1  358      
312-503 8 Chicago Zone 01-Calumet IL CHCGILCGDS1  358      
312-503 9 Chicago Zone 01-Calumet IL CHCGILCGDS1  358      
312-521 A Chicago Zone 01-Calumet IL OKBRILOAXEX  358      
312-521 6 Chicago Zone 01-Calumet IL OKBRILOAXEX  358      
312-529 1 Chicago Zone 01-Franklin IL OKBRILOAXEX  358      
312-529 3 Chicago Zone 01-Franklin IL OKBRILOAXEX  358      
312-529 6 Chicago Zone 01-Franklin IL OKBRILOAXEX  358      
312-533 3 Chicago Zone 01-Wabash IL CHCGILCLDS7  358   2010-10-01   
312-547 2 Chicago Zone 01-Wabash IL CHCGIL24DS0  358   2008-11-01   
312-547 3 Chicago Zone 01-Wabash IL CHCGIL24DS0  358   2008-11-01   
312-547 4 Chicago Zone 01-Wabash IL CHCGIL24DS0  358   2008-11-01   
312-547 5 Chicago Zone 01-Wabash IL CHCGIL24DS0  358   2008-11-01   
312-547 6 Chicago Zone 01-Wabash IL CHCGIL24DS0  358   2008-11-01   

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Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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