IP reputation lookup (prefix not single IP)

Hello all, I’ve seen other folks asking the same/similar question in the past, but I don’t recall seeing more than a few options out there to *try* to suss this out. Use case is someone I’m working with looking to buy a v4 block from a broker. So far I’ve checked Talos and Sorbs (both allow a prefix lookup). Most of the other RBL/multi-RBL sites want a single IP (the use case being email of course). I won’t abuse their service by trying to lookup each single IP in the block... Could anyone share anything/anywhere else I might look to get crumbs of info on a given preifx ? Thanks.