DNS step doesn't work at my system

[erikbgithub]

dig +short  @100.64.0.10 _http._tcp.hello-service.default.svc.cluster.local SRV

All these calls don't work at all. I wonder where this @100.64.0.10 ip is coming from. Is it statically defined somewhere? Or would it change if the kubernetes service IP changes? How can I figure out the one on my system? What (kubernetes docs) should I read to repair it in case it's broken? Still pretty much a k8s noob.