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: 638

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-638 A Muskegon MI KNWDMIJDAMD  6664 SPRINT SPECTRUM L.P. 348      
231-638 0 Muskegon MI   6664 SPRINT SPECTRUM L.P. 348      
231-638 1 Muskegon MI   6664 SPRINT SPECTRUM L.P. 348      
231-638 2 Muskegon MI   6664 SPRINT SPECTRUM L.P. 348      
231-638 3 Muskegon MI   6664 SPRINT SPECTRUM L.P. 348      
231-638 4 Muskegon MI   543C ONVOY, LLC - MI 348   2015-12-17   
231-638 5 Muskegon MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2011-11-13   
231-638 6 Muskegon MI   6664 SPRINT SPECTRUM L.P. 348      
231-638 7 Muskegon MI   6664 SPRINT SPECTRUM L.P. 348      
231-638 8 Muskegon MI   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2013-10-18   
231-638 9 Muskegon MI   6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2012-10-05   

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

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