When you change your nameservers to point at Ezoic, a small number of users will start seeing the Ezoic Optimized Versions of your site right away. However, because various Internet Service Providers (ISPs), and even your computer, or home router, can cache nameservers, it can take up to 24 hours before everyone is redirected. This means that you might not be able to see the Ezoic Optimized Versions roughly 24 hours after you make the change.