cPanel Default Page Not Displaying

Hello Everyone, CLOUDLINUX 7.4 standard [server20] v72.0.10 WHMCS Version Version: 7.5.2 New websites hosted and name servers pointed to our server showing another website hosted on the same server instead of the cPanel default page. Issue is there only for a few minutes and sites starts resolve properly once name servers propagation is successfully completed. Same issue is there when we check a website after deleting its hosting package from our server. Please help?