I removed those nodes (which are all dead anyways).
Let's look at the different areas of the big hairball at the bottom.
Left side in blue, seems to be dominated by friendica instances.
Below them in black are the biggest Mastodon instances like mastodon.social and chaos.social.
Bottom right in orange sound Japanese.
Not sure what the top ones in green have in common. They got many incoming peers as well, but no common theme.
What's that pink cluster at the top? 31 998 gab[.]best instances. Or just domains? I assume they tried that to circumvent instance level blocks.
The only instance they are connected to? beehub.
(I wasn't involved with the Fediverse for some years. Feel free to explain what's going on.)
New day, new try.
#Fediverse as of 2022-04-29.
I found 61 266 instances and 6 217 452 connections (peers). This includes non-functional ones because my script can't differentiate them yet.
1 455 returned info about the instance, 2 547 returned peers. That's an indication for the number of active instances which support the v1 API.
So many error codes. I think I should add that info as well to see if certain parts of the fediverse are broken. (In the past the visualization didn't care if an instance existed or not. Only if another instance listed it as a peer.)
Updated version of the Interactive
Mastodon Hashtag Network.
Warning: 10MB. Desktop computer recommended.
#Pleroma seems to properly mark hashtags in the text, but not add them in the appropriate field of the API.
(Filed a bug report moments ago. It's not a big problem, but probably easy to fix.)
Most different #hashtags
Interactive Mastodon Hashtag Network: https://lucahammer.at/vis/fediverse/2018-08-29-mastoverse_hashtags/
You can search for hashtags and instances.
Core of the hashtag network. Instances are white with fixed size, hashtags colored and size by number of uses.
Most used #hashtags in the collected Toots:
#mastodon 2 825
#nowplaying 2 130
While I didn't think about mobile use, sigmaJS works nicely on touchscreens. I assume it will quickly become unusable if you follow many people. (Hiding edges helps a lot with performance.)
vis.social is an open social platform for creative people, especially anyone in SciArt, SciComm, data, visualization, creative coding, and related arts and research. English is the common language of the instance.