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: 538

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-538 A Fremont MI GDRPMIBLX8Z  2550 123.NET, LLC 348      
231-538 0 Fremont MI GDRPMIBLX8Z  2550 123.NET, LLC 348      
231-538 1 Fremont MI BRSPMI09DS0  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348      
231-538 2 Fremont MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-538 3 Fremont MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-538 4 Fremont MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348      
231-538 5 Fremont MI GDRPMIBL06Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348      
231-538 6 Fremont MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-538 7 Fremont MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-538 8 Fremont MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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