What's up with the sybil attack from 0.2.2.32 relays?

wanoskarnet points out a bunch of relays from subnets like 188.143.233.0/24 141.8.193.0/24 91.226.30.0/24 81.176.229.0/24 62.76.44.0/24 81.177.170.0/24 62.76.179.0/24 81.177.169.0/24 195.43.95.0/24

There's clearly a trend here. It looks like they're small so we could cut them out of the network without much ill effect.

How many are there total? How much capacity is that? When did they show up? Any other interesting patterns?