Why not.

IPv6 Address: 2001:db8::25

Prefix Length: 64

Full Address: 2001:db8:0000:0000:0000:0000:0000:25

Address Range: 2001:db8:0:0:0:0:0:0 - 2001:db8:0:0:ffff:ffff:ffff:ffff

Addresses in Range: 18446744073709552000


ipv4 subnet calculator
subnet practice