[b]"How Do I Effectively Block an IP Address on My Network?"[/b] or [b]"What's the Best Way to Block an IP Address

If the IP keeps changing, blocking one won’t help. You might need to block a whole range.

Check out this site: ipvoid.com. It helps identify if the IP is part of a known malicious range. Then you can block the entire subnet in your router.

Just be careful not to block legit stuff by accident!