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

yo, i had the same issue! router blocks can be hit or miss. i switched to using Cloudflare’s free firewall rules to block ip address ranges. way more reliable.

also, check if your router has a "persistent" option for deny lists—some reset after a while.

if you're techy, look into iptables on Linux. it’s a beast but gets the job done.