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      
231-567 0 Muskegon MI MSKGMIXKQMD  624H ONVOY SPECTRUM, LLC 348   2021-07-11   
231-567 1 Muskegon MI MSKGMIXKQMD  624H ONVOY SPECTRUM, LLC 348   2021-07-11   
231-567 2 Muskegon MI MSKGMIXKQMD  624H ONVOY SPECTRUM, LLC 348   2021-07-11   
231-567 3 Muskegon MI GDRPMIBL31Z  5562 METROPCS, INC. 348   2021-05-02   
231-567 4 Muskegon MI MSKGMIXKQMD  624H ONVOY SPECTRUM, LLC 348   2021-07-11   
231-567 5 Muskegon MI GDRPMIBL06Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348   2021-01-08   
231-567 6 Muskegon MI GDRPMIBL06Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348   2021-01-08   
231-567 7 Muskegon MI GDRPMIBL06Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348   2021-01-08   
231-567 8 Muskegon MI GDRPMIBL06Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348   2021-01-08   
231-567 9 Muskegon MI GDRPMIBL06Z  770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348   2021-01-08   

Last updated: Tue, 15 Jul 2025 18:46:49 UTC

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