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: 577

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-577 A Cadillac MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348      
231-577 0 Cadillac MI WYNGMIKAGT2  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2020-09-28   
231-577 1 Cadillac MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2005-06-13   
231-577 2 Cadillac MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2007-06-16   
231-577 3 Cadillac MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2006-07-30   
231-577 4 Cadillac MI GDRPMIQLX5Y  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348      
231-577 5 Cadillac MI GDRQMIBODS0  7157 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 348   2005-09-03   
231-577 6 Cadillac MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348   2010-11-04   
231-577 7 Cadillac MI GDRPMIBL54Z  0975 LONG DISTANCE OF MICHIGAN, INC. DBA LDMI - MI 348   2004-02-02   
231-577 8 Cadillac MI GDRQMIBODMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 348   2011-05-14   
231-577 9 Cadillac MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348   2011-06-12   

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

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