Local Calling Guide

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

NXX: 306

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
773-306 A Chicago Zone 08-Portsmouth IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-306 0 Chicago Zone 08-Portsmouth IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2001-07-13   
773-306 1 Chicago Zone 08-Portsmouth IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2001-07-13   
773-306 2 Chicago Zone 08-Portsmouth IL CHCGILNEXJX  318J COMCAST IP PHONE, LLC 358   2001-07-13   
773-306 3 Chicago Zone 08-Portsmouth IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2003-02-18   
773-306 4 Chicago Zone 08-Portsmouth IL CHCGILCLDS7  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2001-07-13   
773-306 5 Chicago Zone 08-Portsmouth IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2003-02-18   
773-306 6 Chicago Zone 08-Portsmouth IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2003-03-19   
773-306 7 Chicago Zone 08-Portsmouth IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-306 8 Chicago Zone 08-Portsmouth IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2003-04-09   
773-306 9 Chicago Zone 08-Portsmouth IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2003-04-14   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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