An analysis of the fediverse's backend hosting providers: Germany-based Hetzner hosts 51.6% of the network's active users, followed by France-based OVH at 10.7%
Great analysis! Max Schleiffer / @maxschleiffer@mastodon.social : Where is the whole fediverse hosted? Spoiler: a lot on OVH, but Hetzner seems to win, even if you exclude the active users of the largest instance mastodon.social (which is also hosted by Hetzner). https://blog.benjojo.co.uk/... @jwz@mastodon.social : @anildash Given the current Substack implosion, it's disappointing to see so many people still giving Cloudflare money. A company who's position on Nazis is basically: “We would gleefully do business with ISIS if we were not legally prohibited from doing so”. KuJoe / @KuJoe@mindly.social : @benjojo This was an awesome post! I loved that over 30% of instances behind Cloudflare are self-hosted at home. — Mindly.Social does fit into that larger percentage of users hosted at Hetzner, but that changes tomorrow once I migrate to our new host so the timing of this article is great because I'm glad to see I'm reducing the number of users hosted on a single host. … Anil Dash / @anildash@me.dm : Really pleased to see this post outlining how @devs helps deliver more of the fediverse than any other platform. And the majority of that is done for free, as part of our Fast Forward program for supporting open source and the open web. … @jcrabapple@dmv.community : Where is all of the fediverse? — “For instances using Cloudflare, about 30% appear hosted on residential connections. Overall, Hetzner hosts over 51% of fediverse users, largely due to the large Mastodon.social instance.” — https://blog.benjojo.co.uk/... Forums: Jamesog / Lobsters : Where is all of the fediverse?
Context & Ripple Effects
Fediverse growth has been framed around ActivityPub’s decentralized architecture, including its role in social-network alternatives. This hosting snapshot shows that protocol-level decentralization can coexist with a much narrower infrastructure footprint.
The finding also arrives as larger services explore federation: Threads’ outlined plans for cross-service following and portability could make the distribution of hosting capacity more consequential as federated audiences expand.
First-order effects
- Hetzner is the immediate infrastructure dependency for a majority of active fediverse users, with its position heavily influenced by hosting mastodon.social; OVH is a distant second at 10.7%.
- Instance operators and users face a network whose practical availability is more concentrated than its multi-instance design suggests.
Second-order effects
- Hosting providers serving large instances gain greater operational importance: pricing, capacity limits, or service-policy changes at Hetzner would affect a disproportionate share of federated activity.
- Operators seeking to reduce single-provider exposure have an incentive to spread major instances across hosts, while cloud-hosting alternatives compete to make self-hosting less burdensome—an aim of Cloudflare’s ActivityPub server project.
Third-order effects
- If user growth remains concentrated on a few hosts, the fediverse may become decentralized at the protocol layer but centralized at the infrastructure layer, weakening some of the resilience benefits users associate with federation.
- The key long-term test is whether federation growth produces a broader base of sustainable instance operators and hosts, or reinforces a small set of large-instance infrastructure dependencies.
The trend: Open social protocols are expanding federation while revealing that compute and hosting economics can concentrate control beneath an ostensibly decentralized network.