This gives a partial listing of all the sites hosted directly on Hostingraja:

These are the Cloudflare IP range that shouldn't be blocked by my webhost for proper working of my websites via Cloudflare:

My webserver is placed behind Cloudflare for security. This special URL tells from which data center someone is being served:

And this link tells, from the same location and connection, what is the POP that the ISP (and Cloudflare) is going to:

For emailing pdf functionality I have enabled allow_url_fopen for with my hosting provider. This feature cannot be enabled at user level.