So, #OVH has started hosting a lot of spammers with the usual "we did not collect this information, you must have given it to us voluntarily" on 79.137.20.0/26 (at least) so I have blacklisted 79.137.0.0/17 pre-emptively…
So far I have seen inerofio-expert.com and some other attempts which didn't pass the basic filtering with SpamHaus.