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: 666

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-666 A Muskegon MI GDRPMIBL04Z  543C ONVOY, LLC - MI 348      
231-666 0 Muskegon MI   543C ONVOY, LLC - MI 348   2017-12-21   
231-666 1 Muskegon MI   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2018-10-15   
231-666 2 Muskegon MI   7575 CENTURYLINK COMMUNICATIONS LLC 348   2020-05-09   
231-666 3 Muskegon MI   7575 CENTURYLINK COMMUNICATIONS LLC 348   2020-05-09   
231-666 4 Muskegon MI   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2018-09-09   
231-666 5 Muskegon MI   7575 CENTURYLINK COMMUNICATIONS LLC 348   2020-05-09   
231-666 6 Muskegon MI   543C ONVOY, LLC - MI 348   2017-12-07   
231-666 7 Muskegon MI   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2018-09-17   
231-666 8 Muskegon MI   7575 CENTURYLINK COMMUNICATIONS LLC 348   2020-05-09   
231-666 9 Muskegon MI   7575 CENTURYLINK COMMUNICATIONS LLC 348   2020-05-09   

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

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