Advertising a range of IPs that isn't technically a subnet?

I’d like to use tasilcale as a subnet router, but I need it to advertise a range of IP addresses that doesn’t fit into the “” format.

I have a range of IPs, let’s say “” that I’d like to advertise as a subnet.

Is tailscale able to do this?

If not, what’s the smallest subnet I can use that covers those IPs without “wasting” IP addresses?