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: 375

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-375 A Muskegon MI GDRPMIBLCM5  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348      
231-375 0 Muskegon MI   318J COMCAST IP PHONE LLC 348   2015-11-09   
231-375 1 Muskegon MI   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2018-02-04   
231-375 2 Muskegon MI   7157 BROOKS FIBER COMMUNICATIONS OF MICHIGAN - MI 348   2014-06-13   
231-375 3 Muskegon MI   5562 METRO PCS, INC. 348   2014-03-07   
231-375 4 Muskegon MI   5562 METRO PCS, INC. 348   2014-03-07   
231-375 5 Muskegon MI   318J COMCAST IP PHONE LLC 348   2014-02-15   
231-375 6 Muskegon MI   7575 CENTURYLINK COMMUNICATIONS LLC 348   2015-07-30   
231-375 7 Muskegon MI   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2014-08-14   
231-375 8 Muskegon MI   318J COMCAST IP PHONE LLC 348   2015-03-27   
231-375 9 Muskegon MI   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2014-09-01   

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

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