[adamcharnock]

It looks like they're based on Hetzner. I would guess they are building on Hetzner's dedicated servers. Not that that's a bad thing, I'm a big fan of their dedicated servers.

Source: The IP listed in one of their examples is 2a01:4f8:a0:380b::1. If you lookup the ASN it points to Hetzner.

[qxxx]

I am using Hetzner servers too, and I am happy with them.

[canvayio]

I've been a customer of Hetzner for several years, and I couldn't be happier with their services