fediversecounter on Nostr: npub1ezxuy…y74mr active is what the instance reports as active via the nodeinfo ...
npub1ezxuyey29gdneq8qqva23f6ktz83nws3l38vvd0mdw2tsey4lmqq0y74mr (npub1ezx…74mr) active is what the instance reports as active via the nodeinfo API. Typically this is the activeMonth number but I'll use activeHalfyear if that isn't available. The large misskey instances don't report active via the API but I think all recent code Mastodon ones do. How accurate it is is an entirely different question as there have been bugs in that code. mastodon.social reports 1.76 million accounts and ~270k active. Data on the "popular" instances at https://www.mrp.net/fediverse/popular/