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: 246

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-246 A Lemont IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358      
331-246 0 Lemont IL CHCGIL24DS6  224C ONVOY, LLC 358   2019-07-07   
331-246 1 Lemont IL CHCGIL24DS6  224C ONVOY, LLC 358   2019-07-07   
331-246 2 Lemont IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2019-07-15   
331-246 3 Lemont IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2019-07-15   
331-246 4 Lemont IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2019-07-15   
331-246 5 Lemont IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2019-07-15   
331-246 6 Lemont IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2019-07-15   
331-246 7 Lemont IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2019-07-15   
331-246 8 Lemont IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2019-07-15   
331-246 9 Lemont IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2018-12-16   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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