Am I using Denylist properly?

Hi, just another community member. I would say those look correct to me. Each is a domain name. If after adding they are not being blocked then you might want to check your configuration on either network or browsers etc to make sure all it setup correct. And if a VPN is being used to enable the option in NextDNS to restrict bypassing options. That way if someone is using say icloud relay, VPN, etc to circumvent the blocking this might help.