Telephone Central Office Building Pictures
Central Office buildings house the telephone switching equipment of landline telephones throughout the country. This is a collection of central office buildings throughout the United States and elsewhere.
Central Office
Buildings
Upper Midwestern States
List of Central Office Buildings in the Upper Midwestern states (former Ameritech territory).
Total for this region: 49 (plus 1 CLEC)
Illinois (1)
Area Code 815 (1)
Indiana (0)
Michigan (1)
Area Code 616 (1)
Ohio (7)
Area Code 330 (4)
Area Code 419 (1)
Area Code 937 (2)
Wisconsin (40)
Area Code 262 (6) (Plus 1 CLEC)
Area Code 414 (13)
Area Code 608 (14)
Area Code 715 (3)
Area Code 920 (4)
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