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: 442

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-442 A Harrietta MI BRSPMI09DS0  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348      
231-442 0 Harrietta MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2016-03-21   
231-442 1 Harrietta MI BRSPMI09DS0  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2016-01-22   
231-442 2 Harrietta MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2016-03-21   
231-442 3 Harrietta MI BRSPMI09DS0  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2018-12-28   
231-442 5 Harrietta MI GDRPMIBL41Z  506J TWILIO INTERNATIONAL, INC. 348   2021-07-26   
231-442 6 Harrietta MI GDRPMIBL36Z  624H ONVOY SPECTRUM, LLC 348   2021-06-19   
231-442 7 Harrietta MI TRCYMIMNWMD  508J CENTURYLINK COMMUNICATIONS, LLC 348   2017-10-04   
231-442 8 Harrietta MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2021-08-15   
231-442 9 Harrietta MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348   2021-09-06   

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

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