How Do I Block an IP Address to Stop Unwanted Traffic? or What’s the Best Way to Block an IP Address

Thanks for all the tips, guys! Tried the router method and blocked a few IPs—so far so good.

Quick question though: one of the IPs I blocked keeps popping up with slight variations (like 192.168.1.10, then 192.168.1.11). Is there a way to block ip *ranges* instead of doing it one by one?

Also, GlassWire looks dope—gonna check that out next. Appreciate the help! 🙌