Blocking Specific Websites

Hello, I need some help with blocking some specific websites on my home network. I have found inside my router where I can block these websites, but it redirects to a page claiming the website has been blocked. I need it to be redirected to an error page so it seems like it is not being blocked and just connection issues with the websites.
 
Mine does that too, but it is not customizable.

The alternative is a modified hosts file on the desired pc, but that means you need access and admin password for each system

The file is in this location
c:\windows\system32\drivers\etc
and to trap a specific DOMAIN (not just one page, but all pages) add this to the file
127.0.0.1 blocked_domain_name.com
127.0.0.1 www.blocked_domain_name.com

then get a command prompt and issue these
ipconfig /flushdns
net stop "dns client"
net start "dns client"

attempts at accessing www.blocked_domain_name.com will get a status
Unable to connect
 
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