Whitelisting IPv6 Addresses (First 4 set of numbers)

[JessC]

Is there a way to whitelist an IPv6 address using just the first 4 set of numbers?

One of our staff has an IPv6 address which I have to whitelist each address individually sometimes 2-3 times each day. The first 4 sets of numbers are always the same.

I know you can do something like 205.10.. for IPv4, but is there a way to do it for an IPv6 in Cloudclare > Firewall rules? I know this doesn’t work: 2001:0db8:85a3:0000::::.

Thanks

[sdayman]

Try this:
2001:0db8:85a3:0000::0/64

[JessC]

Just got confirmation from the staff member. Worked like a charm, thanks @sdayman!