Hi,
I've a dedicated server, and I'm using cPanel. Some of the sites are not working. In the accounts list in WHM, those which are not working, have their IP listed as MISSING.
Their nameservers/DNS info are correct at the registry, and all accounts on the server have been transferred from a VPS.
Anyone knows that's wrong?

Try running:
/scripts/rebuildhttpdconf
service httpd restart
service cpanel restart

Fixed the issue, thanks :)