Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 906 [Rate centres in NPA 906] [Dial plan for NPA 906]

NXX: 439

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
906-439 A Chatham MI CHHMMIXIPS0  0685 CHATHAM TEL. CO. 342      
906-439 1 Chatham MI   0685 CHATHAM TEL. CO. 342      
906-439 2 Chatham MI   0685 CHATHAM TEL. CO. 342      
906-439 3 Chatham MI   0685 CHATHAM TEL. CO. 342      
906-439 4 Chatham MI   0685 CHATHAM TEL. CO. 342      
906-439 5 Chatham MI   0685 CHATHAM TEL. CO. 342      
906-439 6 Chatham MI   0685 CHATHAM TEL. CO. 342      
906-439 7 Chatham MI   0685 CHATHAM TEL. CO. 342      
906-439 8 Chatham MI   0685 CHATHAM TEL. CO. 342      
906-439 9 Chatham MI   0685 CHATHAM TEL. CO. 342      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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