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: 220

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-220 A Muskegon MI GDRPMIBLX8Z  2550 123 NET, INC. 348      
231-220 0 Muskegon MI   2550 123 NET, INC. 348      
231-220 1 Muskegon MI   6664 SPRINT SPECTRUM L.P. 348   2011-03-04   
231-220 2 Muskegon MI   2550 123 NET, INC. 348   2009-11-23   
231-220 3 Muskegon MI   6664 SPRINT SPECTRUM L.P. 348   2011-03-04   
231-220 4 Muskegon MI   6664 SPRINT SPECTRUM L.P. 348   2011-03-04   
231-220 5 Muskegon MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2006-03-03   
231-220 6 Muskegon MI   6664 SPRINT SPECTRUM L.P. 348   2011-03-04   
231-220 7 Muskegon MI   6664 SPRINT SPECTRUM L.P. 348   2011-03-04   
231-220 8 Muskegon MI   6664 SPRINT SPECTRUM L.P. 348   2011-03-04   
231-220 9 Muskegon MI   543C ONVOY, LLC - MI 348   2015-12-09   

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

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