Michael StancliftFeb 20

How many Mastodon instances are there? How many active users are there? Depends on where you look and how you count.

Quick sanity check across datasources...

vmcrawl 
Instances: 9,226
MAU: 787,574

joinmastodon.org 
Instances: 7,952
MAU: 780,355

FediDB 
Instances: 9,193
MAU: 1,037,321

(Based on 20 Feb 2026 API data for all sources)

The world, may never know.

Show threadJL Johnson Feb 20
@vmstan seems to me that’s a good thing
Show threadManc AvGeek
@User47 @vmstan agreed - not knowing precisely how many instances and users there are is a feature, not a bug.
I'm just wondering - are those numbers purely for Masto, or do they include other Fedi services?
Feb 20 at 2:01pmWeb
Show threadMichael StancliftFeb 20
@mancavgeek @User47 just Mastodon. If you include all of them the number is over 41K (about half of which are federated Wordpress and Ghost blogs)