Make them memorable then - Facebook do: host -6 www.facebook.com www.facebook.com is an alias for star-mini.c10r.facebook.com. star-mini.c10r.facebook.com has

Make them memorable then - Facebook do: host -6 www.facebook.com www.facebook.com is an alias for star-mini.c10r.facebook.com. star-mini.c10r.facebook.com has IPv6 address 2a03:2880:f158:82:face:b00c:0:25de