[Youden]

I think in the EU the limit is sometimes not Init7 but the Speedtest.net servers. I ran a test to many of them and did get above 10Gbps but only to eu-25g.ookla.tierservers.com, which clearly has a 25Gbps NIC.

A bunch of other Speedtest.net servers were located in Amsterdam and took a very similar route via Cogent but none of the others broke the 10Gbps barrier.

It is for sure often Init7 though. Those peering relationships it built up have become a bit of a weakness because they're usually limited to a 10Gbps port.