Tracing route to unavailable.for.legal.reasons [212.166.122.119] over a maximum of 30 hops:

I find it odd that the warning message is from Magenta (T-Mobile) when A1 is my ISP. A1 is a private company which has fairly recently taken over the role of "main" ISP in Austria, which means, as I understand it, that all traffic in Austria flows through their pipes. What I don't get is why Magenta is providing the blocking (or how, if it's not DNS).