Netflix has crowned Optus as the fastest major Australian Internet service provider using its services in June, according to its speed index rating of ISPs.

Optus registered 3.41Mbps in fibre, cable and DSL. In second place was TPG with fibre and DSL registering 3.19 Mbps. Then followed iiNet (3.17Mbps) Exetel (3.09) and Dodo-Primus (2.85).

Trailing the field was – surprise! – Telstra. Its fibre, cable and DSL services registered just 2.48Mbps speed during prime time, according to Netflix.

It’s unclear if these speed ratings also apply to data downloads from these sites or are peculiar to Netflix.