That looks like 8.8.8.8 actually responded. The ::1 is ipv6’s localhost which seems odd. As for the wong ipv4 I’m not sure.
I normally see something like requested 8.8.8.8 but 1.2.3.4 responded if the router was forcing traffic to their DNS servers.
You can also specify the DNS server to use when using nslookup like: nslookup www.google.com 1.1.1.1. And you can see if you get and different answers from there. But what you posted doesn’t seem out of the ordinary other than the ::1.
Edit just for shits and giggles also try nslookup xx.xx.xx.xx where xx.xx… is the wrong up from the other side of the world and see what domain it returns.