Telstra

490-496 Northbourne Avenue, on the corner of Antill St, Dickson.

Telstra, Australia's biggest telecommunications company (which was originally government-owned but has been progressively sold off, not necessarily for the better), occupies the building at the back of this photo (Telstra House). The building at the front - 496 Northbourne Avenue, which replaced the old Kodak House a few years ago, is tenanted by a number of mostly government departments, as far as I could find out with a quick search online, including CrimTrac ("CrimTrac is the national information-sharing service for Australia's police, law enforcement and national security agencies").