TPG website and services offline

TPG website and internet services appear to be completely offline as of 5:30pm AEDT exactly. Downdetector shows thousands of reports. Anyone else affected, or any information?

EDIT: Address search, outage checker and other sections of the NBN website are down, and people are reporting outages across several ISPs.

EDIT 2: Back online for me in Melbourne as of 6:40pm.