Paul:
What could bring several exits at different providers and different operating systems (Linux and FreeBSD) down on the same day, Jan 21st?
Since, while they still run as relays, they don’t show as exits any more without any change from my side.
They do run on Tor 0.3.1.9 or 0.3.2.9 in the same Family.
I'm not sure if you are referring to your relays or someone else's relays?
I assume you talk about: https://atlas.torproject.org/#search/contact:1K38x9xqK3YDzjehYFAEPzsESEC4ScH...
it is indeed interesting why some of them have no exit flag, example: https://atlas.torproject.org/#details/B27509F6D6233ACD2EAC8936D5FE7CBF009163...
@David: they don't have badexit flags
2018-01-21 appeas to have been an interesting day indeed https://twitter.com/nusenu_/status/960176185954242560