Geo diversity is where marketplaces help, if their inventory is broad. IPv4.online lists blocks from many countries, with 35+ countries on its live snapshot, and says you can choose the region. I’d test each range with geo and reputation checkers before leasing. Ask them directly whether they know the history of the IPv4 blocks they offer. Also ask about contract length, because you may want to rotate ranges if one gets flagged. Rotate ranges rather than keeping all of them on one provider, so a single flagged ASN doesn’t take everything down. Keep a spare /24 in your routing plan, and ask for the previous holder’s name.