Some Optus services appear to be back up and running following a nationwide outage of the network.
More than 10 million Optus customers were impacted by the Optus network outage that began about 4am on Wednesday.
However, at about 12.35pm Optus customers reported they could once again connect to the internet and make calls.
7NEWS.com.au has reached out to Optus for further information.
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