Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 331 [Rate centres in NPA 331] [Dial plan for NPA 331]

NXX: 245

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-245 A Bartlett IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
331-245 0 Bartlett IL   224C ONVOY, LLC 358   2014-12-11   
331-245 1 Bartlett IL   224C ONVOY, LLC 358   2014-11-15   
331-245 2 Bartlett IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2018-05-24   
331-245 3 Bartlett IL   224C ONVOY, LLC 358   2014-11-15   
331-245 4 Bartlett IL   6529 T-MOBILE USA, INC. 358   2014-04-08   
331-245 5 Bartlett IL   6529 T-MOBILE USA, INC. 358   2014-04-08   
331-245 6 Bartlett IL   6529 T-MOBILE USA, INC. 358   2014-04-08   
331-245 7 Bartlett IL   6529 T-MOBILE USA, INC. 358   2013-06-16   
331-245 8 Bartlett IL   6529 T-MOBILE USA, INC. 358   2013-06-16   
331-245 9 Bartlett IL   6529 T-MOBILE USA, INC. 358   2013-06-13   

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

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