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: 321

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-321 A Elmira MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-321 0 Elmira MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2023-08-06   
231-321 3 Elmira MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2022-12-29   
231-321 4 Elmira MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348   2021-07-23   
231-321 5 Elmira MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-07-23   
231-321 6 Elmira MI GDRPMIBL41Z  506J TWILIO INTERNATIONAL, INC. 348   2021-07-26   
231-321 7 Elmira MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-09-10   

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

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