I migrated my site DNS to Cloudflare. I installed the DNS server given by the Cloudflare to my domain name servers. But when I check the IP address of my site in https://whatsmydns.net, I get different IP address than the IP address in the DNS dashboard. The IP address is actually is of the old host. I already migrated to the new host before migrating the DNS to the Clouflare. What is happening, why I am getting the IP address of the old host.