Melbourne train services were also hit by issues, coming to a halt for a while this morning. Services resumed about 6am. It is not known if there is a connection between the two outages.
Optus has not issued any media release about the issues affecting its networks. The company has been contacted for comment.
amaysim, a MVNO that resells Optus services, had this on its website: "We're currently experiencing nationwide outage which may impact your ability to connect to our services. We apologise for any inconvenience and appreciate your patience as we work to resolve this matter."
#Optus are currently unable to provide Australians with an update as their phones & internet are currently down. Instead they have resorted to more traditional means of communications. pic.twitter.com/ZzCy8YhpUI
— Glenn Colgan (@GlennColgan) November 7, 2023
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"We are currently working to identify the cause and apologise for any inconvenience.
"In case of an emergency, customers can still call 000."
Hey Optus, why is your entire network down?
— Daryl Maguire’s tractor (@DarylTractor) November 7, 2023
Optus, being advised by its star recruit Gladys Berejiklian: pic.twitter.com/5bTMFJrNsz
Optus chief executive Kelly Bayer Rosmarin called in to ABC Sydney on WhatsApp and said she had "no more information" as to the cause of the issue.
Bayer Rosmarin said the company's technicians had tried "a number of paths of restoration" but none had worked.
First pictures of the #Optus marketing department this morning pic.twitter.com/Oca2cebG6D
— Simmo (@simplm) November 7, 2023
"Our team is still pursuing every possible avenue. We had a number of hypotheses and each one so far that we've tested and put in place new actions for has not resolved the fundamental issue," Bayer Rosmarin told the ABC.
"So we're still working on it. And when we have a identified root cause and a time for restoration, we'll be updating everybody as soon as we can."
