Blizzard's routing changes were 3 weeks ago...
Meanwhile 2degrees routing changes in the last 24 or so hours...
+ 111.69.88.0/24 Announced
+ 111.69.89.0/24 Announced
+ 111.69.90.0/24 Announced
+ 111.69.91.0/24 Announced
+ 111.69.92.0/24 Announced
+ 111.69.93.0/24 Announced
+ 111.69.94.0/24 Announced
+ 111.69.95.0/24 Announced
+ 111.69.184.0/24 Announced
+ 111.69.185.0/24 Announced
+ 111.69.252.0/24 Announced
+ 111.69.253.0/24 Announced
Are these their CGNAT ranges? Are those affected on these ranges... google "what's my IP".
Routing for those prefixes look different from here... certainly not as diverse through the looking glass of Australian providers.