OVH gives you a IPv6 /64 block for dedicated servers but only /128 for a VPS and only allows buying extra IPv4 addresses.
I never previously had a reason to care much, but it turns out there are IP-based reputation services blacklisting based on /64 blocks as the smallest unit.
Conversation
These folks block the entire OVH address space for "Level 3" and a bunch of the IP ranges for "Level 2":
uceprotect.net/en/rblcheck.ph
Check out the query they suggest for service providers:
uceprotect.net/en/rblcheck.ph
They want you to pay 249 Swiss Francs to get an IP range removed...
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Alternatively, you can pay 25 Swiss Francs per month to have your IP added via whitelisted.org/?ip=51.222.140.
Nice business model. Clearly no conflicts of interest or extortion going on here. Email is such a terrible ecosystem. One of these services blacklisted us for requiring TLS.
