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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-834 A Grant MI GRNTMIMNRSA  9323 AMERITECH MICHIGAN 348      
231-834 0 Grant MI   9323 AMERITECH MICHIGAN 348      
231-834 1 Grant MI   9323 AMERITECH MICHIGAN 348      
231-834 2 Grant MI   279B CLEAR RATE COMMUNICATIONS - CLEC - MI 348   2011-06-22   
231-834 4 Grant MI   543C ONVOY, LLC - MI 348   2016-03-21   
231-834 5 Grant MI   9323 AMERITECH MICHIGAN 348      
231-834 7 Grant MI   9323 AMERITECH MICHIGAN 348      
231-834 8 Grant MI   9323 AMERITECH MICHIGAN 348      
231-834 9 Grant MI   9323 AMERITECH MICHIGAN 348      

Last updated: Sat, 29 Jun 2019 02:32:58 UTC

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