Mobile phones in Austria T-Mobile/Magenta finally started in June 2019 in Austria with IPv6. You can test it on your (Austrian) phone with either https://test-ipv6.com
https://stats.labs.apnic.net/ipv6/AS8412?c=AT&p=1&v=1&w=30&x=1
When will A1.net and Drei.at join?