NRL Premiership

Australian Rugby League & Super League Era
Following the expansion of the New South Wales Rugby League, they rebranded to the Australian Rugby League. The league existed for a brief three-year period. Optus gained league sponsorship and naming rights in 1996 after Winfield withdrew theirs due to federal legislation against tobacco advertising. The next year, a rival league debuted under the name Super League sponsored by Optus' own rival Telstra. The rivalry wouldn't last as the two leagues merged the next year to form the current National Rugby League.

Telstra Premiership
Telstra sponsored the NRL Premiership from 2001 onwards having already sponsored the Super League. They have maintained primary sponsorship of the league and it's naming rights ever since.

2012
This logo briefly existed for one season between Telstra's 2011 brand refresh and the NRL's 2012 logo change.