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: 770

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
224-770 A Barrington IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
224-770 0 Barrington IL   6529 T-MOBILE USA, INC. 358   2006-01-20   
224-770 1 Barrington IL   6529 T-MOBILE USA, INC. 358   2012-08-29   
224-770 2 Barrington IL   829J PAETEC ITEL, LLC 358   2006-02-17   
224-770 3 Barrington IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2007-04-30   
224-770 4 Barrington IL   5447 ACCESS ONE, INC. - IL 358   2007-12-06   
224-770 5 Barrington IL   5447 ACCESS ONE, INC. - IL 358   2007-11-17   
224-770 6 Barrington IL   624H ONVOY SPECTRUM, LLC 358   2021-11-26   
224-770 7 Barrington IL   6529 T-MOBILE USA, INC. 358   2014-06-18   
224-770 8 Barrington IL   6529 T-MOBILE USA, INC. 358   2014-06-18   
224-770 9 Barrington IL   6529 T-MOBILE USA, INC. 358   2006-01-20   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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