Area Code 810
Telephone Central Office Building Pictures

The following are representative examples of telephone central office buildings in Area Code 810 (Michigan).

Click on the pictures below for a larger version.

Port Huron

Listing Updated: May 2014 Operating Company: at&t/SBC/Ameritech/Michigan Bell CLLI: PTHRMIMNDS1 Switch Type: Ribbon/Genband/Nortel DMS-100 Prefixes Served: (810) 887, 966, 982, 984-5, 987, 989 Notes: Source: GSV