What is the correct ipv6 address (with prefix)?

What is the correct ipv6 address (with prefix)?

• 2001:db8:85a3::8a2e:370:7334/64
• 2001:db8:85a3::8a2e:370::7334/64
• 2001:fg8b:abcd:1234::7028/64
• 192.168.0.1/24 

EXPLANATION

Start Range:  2001:db8:85a3:0:0:0:0:0

End Range:  2001:db8:85a3:0:ffff:ffff:ffff:ffff

No. of host:  18446744073709551616