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: 261

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-261 A Lemont IL ELGNILOT0MD  6529 T-MOBILE USA, INC. 358      
331-261 0 Lemont IL CHCGIL24XMD  495J STRATUS NETWORKS 358   2020-09-26   
331-261 1 Lemont IL CHCGIL24MMD  515J IP HORIZON LLC 358   2021-06-14   
331-261 2 Lemont IL CHCGILNEXIX  506J TWILIO INTERNATIONAL, INC. 358   2021-04-13   
331-261 3 Lemont IL ELGNILOT0MD  6529 T-MOBILE USA, INC. 358   2023-02-11   
331-261 4 Lemont IL CHCGIL24DS6  224C ONVOY, LLC 358   2021-07-04   
331-261 5 Lemont IL CHCGIL24DS6  224C ONVOY, LLC 358   2021-07-04   
331-261 6 Lemont IL CHCGIL24DS6  224C ONVOY, LLC 358   2021-07-04   
331-261 7 Lemont IL ELGNILOT0MD  6529 T-MOBILE USA, INC. 358   2023-02-11   
331-261 8 Lemont IL ELGNILOT0MD  6529 T-MOBILE USA, INC. 358   2019-08-19   
331-261 9 Lemont IL ELGNILOT0MD  6529 T-MOBILE USA, INC. 358   2019-08-19   

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

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