Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 231 [Rate centres in NPA 231] [Dial plan for NPA 231]

NXX: 583

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-583 A Ludington MI GDRPMIBLX8Z  2550 123.NET, INC. 348      
231-583 0 Ludington MI GDRPMIBLX8Z  2550 123.NET, INC. 348      
231-583 1 Ludington MI GDRPMIBLX8Z  2550 123.NET, INC. 348      
231-583 2 Ludington MI GDRPMIBL41Z  506J TWILIO INTERNATIONAL, INC. 348   2021-07-26   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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