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: 225

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-225 A Elmhurst IL ELGNILOTGT5  5562 METROPCS, INC. 358      
331-225 0 Elmhurst IL   318J COMCAST IP PHONE, LLC 358   2014-08-12   
331-225 1 Elmhurst IL   224C ONVOY, LLC 358   2012-09-30   
331-225 2 Elmhurst IL   318J COMCAST IP PHONE, LLC 358   2012-10-04   
331-225 3 Elmhurst IL   318J COMCAST IP PHONE, LLC 358   2012-10-04   
331-225 4 Elmhurst IL   224C ONVOY, LLC 358   2014-03-16   
331-225 5 Elmhurst IL   5562 METROPCS, INC. 358   2011-10-06   
331-225 6 Elmhurst IL   5562 METROPCS, INC. 358   2011-10-06   
331-225 7 Elmhurst IL   5562 METROPCS, INC. 358   2011-10-06   
331-225 8 Elmhurst IL   6529 T-MOBILE USA, INC. 358   2024-03-07   
331-225 9 Elmhurst IL   224C ONVOY, LLC 358   2024-02-25   

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

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