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: 567

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-567 A Muskegon MI GDRPMIBL06Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348   2021-01-08   
231-567 5 Muskegon MI   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348   2021-01-08   
231-567 6 Muskegon MI   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348   2021-01-08   
231-567 7 Muskegon MI   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348   2021-01-08   
231-567 8 Muskegon MI   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348   2021-01-08   
231-567 9 Muskegon MI   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348   2021-01-08   

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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