Local Calling Guide

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NPA: 773 [Rate centres in NPA 773] [Dial plan for NPA 773]

NXX: 437

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
773-437 A Chicago Zone 09-South Chicago IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-437 0 Chicago Zone 09-South Chicago IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-01-27   
773-437 1 Chicago Zone 09-South Chicago IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-437 2 Chicago Zone 09-South Chicago IL CHCGIL24DS0  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-437 3 Chicago Zone 09-South Chicago IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2006-09-15   
773-437 4 Chicago Zone 09-South Chicago IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2006-09-15   
773-437 5 Chicago Zone 09-South Chicago IL CHCGILCLXOX  516C AT&T CORP. 358   2006-05-02   
773-437 6 Chicago Zone 09-South Chicago IL CHCGILTCDS4  7056 XO ILLINOIS, INC. 358   2007-05-13   
773-437 7 Chicago Zone 09-South Chicago IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-01-27   
773-437 8 Chicago Zone 09-South Chicago IL CHCGILTCDS4  7056 XO ILLINOIS, INC. 358   2007-05-13   
773-437 9 Chicago Zone 09-South Chicago IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2009-01-27   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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