This python library is an implementation of RFC 1924.
With this library you can store IPv6 addresses in a more compact form. It's Base85 encoded.
from rfc1924 import *
print(encode("2345:0425:2CA1::0567:5673:23b5")) # -> AN?6(i3Y+yVr74uX@J3P
print(decode("AN?6(i3Y+yVr74uX@J3P")) # -> 2345:0425:2CA1::0567:5673:23b5
Save up to 48% space with this compact form:
ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
-> =r54lj&NUUO~Hi%c2ym0