Comment System showing different type of IP

This look like a valid IPv6 that uses 128 bit addresses, instead of the older 32 bit addresses of IPv4 that have already been exhausted.

Here’s a schema picture of an IPv6 address from Wikipedia:

IPv6

Even though the IP address is valid, it’s another matter if the comment is a spam or not. I assume the the question is only regarding the format of the IP address.