[techsupporter]

Your sponsoring LIR for IPv6 space and ASNs can also be your sponsoring LIR for legacy IPv4 assignments: https://www.ripe.net/manage-ips-and-asns/legacy-resources/ri...

You can then issue RPKI ROAs.

[icedchai]

I have heard of this. I would need to transfer my ARIN IPv4 block to RIPE though, right?