OVH

We use Hetzner Online AG since the inception of our business, because of the great prices, marvelous support and great interface (especially the new cloud interface). Other options that we tested are DigitalOcean (was more expensive than the new hetzner cloud and didn't offer "huge" dedicated servers), @Vultr (about the same issue as with DigitalOcean , although the prices were better), OVH (Prices, old interface, no "tiny" packages and [at least back at the day] only monthly payment) and Living Bots (Only dedicated servers, too expensive for our needs).

Hetzner offered the best spectrum of servers and has great prices and REALLY great prices in the server auctions.

Hosting updown.io started with a single OVH server and quickly grew to more server, first it was DigitalOcean VMs and we were very satisfied about them. But we then noticed some shortcomings about #IPv6 networking, although DigitalOcean supports it they don't provide the standard IP range to each VM (by choice) and thus have to block port 25 to avoid other machines being blocked in case of spammer. This is not good for us it means we can't monitor IPv6 SMTP servers properly, that's why we switched to @Vultr (one of their main competitors) which provides similar prices, more locations, and true IPv6 support with no blocked ports. Of course they offer less tools and the support is probably better at DigitalOcean but so far we're happy with @Vultr.

We still use some @OVH servers (which offers tremendous price/performance ratio) for the main web and database server + 2 of the daemons. In addition to this, we also have 2 DigitalOcean VMs for the secondary web and database server and for the automatic TLS termination proxy used to automatically issue Let's Encrypt certs for status page custom domains (for these servers the IPv6 port block is not an issue)

We use OVH to host the majority of our servers spread across the globe. This allows us to have a single point of contact for our main hosting when issues arise as well as giving us the ability to quickly failover servers when needed. OVH also helps us by keeping the price we pay for servers down therefore keeping the fees on our products themselves down. OVH

All of our other Services are hosted at OVH like Domains, V-Server and more... OVH

The majority of our dedicated servers are hosted with OVH, due to their competitive pricing, easy to use control panels and quick on-site support options. OVH