All that means is that this other site is hosted on the same IP with the hosting provider.
Any further investigation?
no, that IP is from cloudflare... it is not useful and has no sense to make a reverse IP lookup on a cloudflare IP...
Cloudflare acts like a firewall... and hide the real IP of the web server.. more interesting info about cloudflare, here
http://cloudflare-watch.org/someone living in the USA should try to call cloudflare...
in fact, only cloudflare well know the exact ip address of the web site..
anyway I read on http://cloudflare-watch.org/ that cloudflare does not give ip to anyone...THE ONLY "REAL IP" WE HAVE IS THIS:
mail.markets.cx ---> 46.22.211.182which is their smtp mail server, still working (TCP port 25 still opened).
If you check headers of the email received from them, it has been sent from this server.Mail server 46.22.211.182 is fisically hosted in an Estonian datacenter at
http://wavecom.ee but this IP range seems belonging to serbian web hosting company
http://inferno.name