Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 618 [Rate centres in NPA 618] [Dial plan for NPA 618]

NXX: 712

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-712 A Thebes IL CRDLILAB0MD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 362      
618-712 0 Thebes IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 362      
618-712 1 Thebes IL   073H TELNYX LLC 362   2020-07-20   
618-712 2 Thebes IL   224C ONVOY, LLC 362   2018-10-01   
618-712 3 Thebes IL   516C AT&T CORP. 362   2025-10-06   
618-712 4 Thebes IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 362   2004-07-02   
618-712 5 Thebes IL   490J DISH WIRELESS, LLC 362   2023-12-30   
618-712 8 Thebes IL   495J STRATUS NETWORKS 362   2020-12-19   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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