xeserve missing from the planet

cPanel is a software package used by companies to manage hosting servers. In this respect, xeserve.com are not an affiliate of cPanel but merely use the software cPanel creates.

dnsreport.com appears to be showing errors for xeserve.com: http://dnsreport.com/tools/dnsreport.ch?domain=xeserve.com. As that is the case, you'll have trouble viewing their website and probably have trouble sending them emails.

I would expect they would be aware of such a major issue and I hope they are working to resolve it. Either way, there's little you can do except patiently wait. Alternatively, you might want to find a new host if the service from xeserve.com proves unreliable.