Update issued by Telstra at 21:45: “The network issue was restored around 8.30pm and we are working with customers to confirm that their services are up and running,” a spokesperson said.
“We apologise to all affected customers and their customers for the impact that this has caused.”
Telstra has confirmed that some of its business services in Victoria have gone down.
“We have a fault that has overloaded traffic in part of our enterprise IP network in Victoria,” a spokesperson for the telco said.
“We are currently in the process of isolating the impacted Points of Presence and will be reconnecting them progressively.
“We will update you further once we know how that process is progressing.”
Jetstar was among the companies affected by the outage.
“Jetstar is experiencing some minor delays as a result of an IT outage impacting check-in systems at Melbourne Airport,” a spokesperson for the airline said.
"Our airport team is working hard to get customers on their way as quickly as possible with iPad and manual check-in procedures. We’re working closely with Telstra to get our systems back up and running.”
Myer and ME Bank have also been hit by the outage.
All Myer stores are currently open, but card payments are down due to the Telstra outage, a spokesperson for the retailer told Computerworld Australia.
NAB has also suffered problems with a range of its services.
“This afternoon we’ve experienced difficulties with Internet Banking, Telephone Banking and our Contact Centre,” a spokesperson for the bank said.
“We’re working with our suppliers to restore services as soon as possible. We apologise for any inconvenience caused to customers.”
Others hit by the outage reportedly included ME Bank and politicians' electorate offices.
@krisgesling Hi Kris, we are currently experiencing issues due to a Telstra Internet Outage. Sorry - we will keep you posted here. Bec
— ME (@mebank) June 30, 2016
We're working to fix an issue affecting some business and enterprise services in Victoria. Home broadband and mobile are unaffected.
— Telstra (@Telstra) June 30, 2016
The outage is particularly bad timing for the telco, coming a day after CEO Andrew Penn said Telstra would spend $250 million improving network reliability.
The telco’s fixed and mobile services have this year been subject to a number of high-profile outages.
Penn yesterday said that Telstra would use the funds to improve the reliability and resilience of its core network; improve the resilience of its mobile network, including improving recovery time and implementing real-time monitoring; and boost the capacity of its ADSL services.
The telco has carried out two reviews into improving its network.