These are the routes that I got from Mileage monkey tool with >10,000 miles critetia. Most of them may have a fueling stop, but operated with one flight number.

QF 743 (jy) 10165 FCO-SYD
QF 743 (jy) 10165 SYD-FCO
QF 744 (fjpy) 10262 FRA-SYD
QF 744 (fjpy) 10262 SYD-FRA
QF 744 (fjpy) 10517 LHR-MEL
QF 744 (fjpy) 10517 MEL-LHR
QF 744 (fjpy) 10587 LHR-SYD
QF 744 (fjpy) 10587 SYD-LHR
JL 744 (fjy) 11503 GRU-NRT
JL 744 (fjy) 11503 NRT-GRU