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: 328

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-328 A Merritt MI MRRTMIXIDS0  0702 BRIGHTSPEED OF MICHIGAN, LLC 348      
231-328 0 Merritt MI   0702 BRIGHTSPEED OF MICHIGAN, LLC 348      
231-328 1 Merritt MI   0702 BRIGHTSPEED OF MICHIGAN, LLC 348      
231-328 2 Merritt MI   0702 BRIGHTSPEED OF MICHIGAN, LLC 348      
231-328 3 Merritt MI   0702 BRIGHTSPEED OF MICHIGAN, LLC 348      
231-328 4 Merritt MI   0702 BRIGHTSPEED OF MICHIGAN, LLC 348      
231-328 5 Merritt MI   0702 BRIGHTSPEED OF MICHIGAN, LLC 348      
231-328 6 Merritt MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 348   2015-10-18   
231-328 7 Merritt MI   0702 BRIGHTSPEED OF MICHIGAN, LLC 348      
231-328 8 Merritt MI   0702 BRIGHTSPEED OF MICHIGAN, LLC 348      
231-328 9 Merritt MI   0702 BRIGHTSPEED OF MICHIGAN, LLC 348      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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