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: 622

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
810-622 A Port Sanilac MI PTSNMIMNRSA  9323 MICHIGAN BELL TEL CO 340      
810-622 0 Port Sanilac MI PTSNMIMNRSA  9323 MICHIGAN BELL TEL CO 340      
810-622 6 Port Sanilac MI SFLDMIMKBMD  516J TON80 COMMUNICATIONS, LLC 340   2022-04-05   
810-622 7 Port Sanilac MI   046L CLEAR RATE COMMUNICATIONS, LLC 340   2010-06-12   
810-622 8 Port Sanilac MI PTSNMIMNRSA  9323 MICHIGAN BELL TEL CO 340      
810-622 9 Port Sanilac MI PTSNMIMNRSA  9323 MICHIGAN BELL TEL CO 340      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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