Australian telco Optus has suffered yet another network outage.

The carrier's latest outage today (December 3) impacted close to 100,000 customers in Brisbane.

A network server failure caused the incident, which impacted around 95,000 Optus NBN customers in Brisbane and parts of Queensland.

The outage hit the telco in the early hours of this morning. iTnews reports that Optus confirmed that the network server failure occurred in its Rochedale, Brisbane exchange.

Restoration to the server was still continuing into the evening local time, with the vast majority of customers reporting issues with landline and Internet services, but not with Triple Zero services.

An NBN Co spokesperson told iTnews the outage was not related to any of its equipment or network systems it operates.

The timing couldn't be any worse for Optus, which has suffered several high-profile outages in the last couple of months.

The carrier is under heavy scrutiny for the September 18 incident, when the telco experienced a significant Triple Zero outage during which four people died, and more than 600 customers were impacted.

During that outage, Optus was accused of acting slowly to cooperate with the Australian Communications and Media Authority (ACMA) about the fatalities.

That was followed by another emergency network outage later in the same month.

At the time, Optus stated that the incident centered around a mobile phone tower site in the Dapto area of New South Wales. The telco subsequently blamed network vendor Ericsson for that outage.

The situation hasn't been helped by two separate outages where vandals deliberately attacked its network infrastructure, including last week in Melbourne, following another fiber cut last month.

The outages have put pressure on CEO Stephen Rue, who took over the role last November, replacing Kelly Bayer, who resigned amid the fallout from a previous outage that lasted more than 14 hours in November 2023.

As such, the carrier was slapped with an AU$12 million (US$7.93m) fine. Its head of networks, Lambo Kanagaratnam, also quit months later. Rue has insisted he won't leave, as the company continues to cooperate with the ACMA's investigation.