Canadial Know Who Called
← Area code 608

608-620 phone numbers

Numbers 608-620-0000 to 608-620-9999 are assigned to Level 3 Telecom of Wisconsin, LP in Madison, WI. 9 of its ten thousand-number blocks are assigned to other carriers (number pooling).

Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.

Reported numbers in 608-620