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: 310

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-310 A Falmouth MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348      
231-310 0 Falmouth MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2020-09-12   
231-310 1 Falmouth MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2020-09-12   
231-310 2 Falmouth MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2020-05-09   
231-310 3 Falmouth MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2020-05-09   
231-310 4 Falmouth MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2020-05-09   
231-310 5 Falmouth MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2018-11-24   
231-310 6 Falmouth MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2020-05-09   
231-310 7 Falmouth MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-03-06   
231-310 8 Falmouth MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-03-06   
231-310 9 Falmouth MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348   2021-06-19   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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