Optus mobile services are down across the country, affecting millions of Australian customers and businesses.
The outage was first reported at around 4am AEDT, with Optus customers across the country taking to social media to find out what was happening.
Mobile phones are unable to make and receive calls and mobile internet services are also down.
Whirlpool sometimes has leaked technical information about outages or other insights: https://forums.whirlpool.net.au/thread/96n1w7m9
EDIT: Gough Lui (Gogli?) is also doing some detailed meta-coverage on his blog https://goughlui.com/2023/11/08/breaking-optus-nationwide-outage-08-11-2023/