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: 689

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-689 A White Cloud MI WHCLMIADRSA  9323 MICHIGAN BELL TEL CO 348      
231-689 0 White Cloud MI WHCLMIADRSA  9323 MICHIGAN BELL TEL CO 348      
231-689 1 White Cloud MI WHCLMIADRSA  9323 MICHIGAN BELL TEL CO 348      
231-689 2 White Cloud MI WHCLMIADRSA  9323 MICHIGAN BELL TEL CO 348      
231-689 3 White Cloud MI WHCLMIADRSA  9323 MICHIGAN BELL TEL CO 348      
231-689 4 White Cloud MI GDRPMIBLXTZ  3535 ACD TELECOM, INC. - MI 348   2005-02-18   
231-689 5 White Cloud MI WHCLMIADRSA  9323 MICHIGAN BELL TEL CO 348      
231-689 6 White Cloud MI WHCLMIADRSA  9323 MICHIGAN BELL TEL CO 348      
231-689 7 White Cloud MI WHCLMIADRSA  9323 MICHIGAN BELL TEL CO 348      
231-689 8 White Cloud MI GDRPMIBL00Z  991E BANDWIDTH.COM CLEC, LLC - MI 348   2012-07-06   
231-689 9 White Cloud MI GDRPMIBL04Z  543C ONVOY, LLCV - MI 348   2013-03-18   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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