Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 224 [Rate centres in NPA 224] [Dial plan for NPA 224]

NXX: 521

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
224-521 A Glenview IL GLVWILGVDS0  9329 ILLINOIS BELL TEL CO 358      
224-521 0 Glenview IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2005-02-04   
224-521 1 Glenview IL CHCGIL24DS6  224C ONVOY, LLC 358   2004-09-20   
224-521 2 Glenview IL CHCGIL24DS7  5917 FIRST COMMUNICATIONS, LLC 358   2004-07-16   
224-521 3 Glenview IL CHCGILMF8MD  6529 T-MOBILE USA, INC. 358   2023-02-11   
224-521 4 Glenview IL GLVWILGVDS0  9329 ILLINOIS BELL TEL CO 358   2003-05-05   
224-521 5 Glenview IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2003-08-18   
224-521 6 Glenview IL CHCGIL24DS6  224C ONVOY, LLC 358   2010-05-20   
224-521 7 Glenview IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2004-10-22   
224-521 8 Glenview IL GLVWILGVDS0  9329 ILLINOIS BELL TEL CO 358   2002-12-22   
224-521 9 Glenview IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358   2005-01-10   

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

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