Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 810 [Rate centres in NPA 810] [Dial plan for NPA 810]

NXX: 966

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
810-966 A Port Huron MI PTHRMIMNDS1  9323 MICHIGAN BELL TEL CO 340      
810-966 0 Port Huron MI   9323 MICHIGAN BELL TEL CO 340      
810-966 1 Port Huron MI   9323 MICHIGAN BELL TEL CO 340      
810-966 2 Port Huron MI   9323 MICHIGAN BELL TEL CO 340      
810-966 3 Port Huron MI   9323 MICHIGAN BELL TEL CO 340      
810-966 4 Port Huron MI   9323 MICHIGAN BELL TEL CO 340      
810-966 5 Port Huron MI   9323 MICHIGAN BELL TEL CO 340      
810-966 6 Port Huron MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2010-03-15   
810-966 7 Port Huron MI   9323 MICHIGAN BELL TEL CO 340      
810-966 8 Port Huron MI   9323 MICHIGAN BELL TEL CO 340      
810-966 9 Port Huron MI   9323 MICHIGAN BELL TEL CO 340      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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