Yes, you will need to notify us that you would like to use your own DNS provider, we will then guide you through the setup process to configure this.
We will provide you with a CNAME record to use with your domain.
When using an alternative DNS provider your website will not work on the root of your domain (example.com) and will require a redirect to be put in place for traffic from the root of your domain (example.com) to your desired subdomain (www.example.com).
We are able to put in place a redirect for HTTP traffic from the root of your domain (example.com), however at this time we cannot redirect HTTPS traffic in this way without the use of a paid for SSL certificate.
We continue to require all traffic to pass through the Cloudflare proxy, this is as we use their DDoS and firewall services.
