: Why is "googlehosted.com" in the DNS records for our website after signing up for DDOS protection? Recently we had to get some DDOS protection for our website because of the large attacks we

@Miguel251

This is an old question but I recently ran into this issue and see that your question wasn't really answered. The *.dv.googlehosted.com CNAME record is for Google Apps, now known as GSuite, to verify your domain ownership.

I'm pretty sure it has nothing to do with DDOS protection, and is just so that can Google can verify your domain name when you sign up for GSuite/Google Apps.

Vote Up Vote Down

@Heady270

Here is what happens when a user makes a request to your site:


They do a DNS lookup for yourdomain.example.com which tells them it is a CNAME of SOMETEXTXXXX.dv.googlehosted.com
They do a DNS lookup for SOMETEXTXXXX.dv.googlehosted.com and get the IP address 1.2.3.4
The browser opens a HTTP connection to 1.2.3.4 and sends the header: host: yourdomain.example.com
The server at SOMETEXTXXXX.dv.googlehosted.com recognizes it as a request for yourdomain.example.com
It checks that the request is not part of a denial of service.
It opens an HTTP connection to your server and retrieves the page.
It sends the page back to the client.


This DDOS prevention proxy is likely configured to serve multiple sites. That is why when you make a request at it with its own host name, you get a 404. In that case, it doesn't know where it should get the content from.

Vote Up Vote Down