kitsch wrote:since youtube is a google company now, is otromatic[at]gmail[dot]com not linked to him somehow just by some default process? (at the least, a working email he would be able to access, hopefully forwarded to one he checks)
Nope, not necessarily. While all YT accounts have to be linked to a Google account nowadays, there's no guarantee that the names match.
This may just be a DNS configuration error. The domain doesn't have any entries, but the page is still online on the IP address 194.150.236.81. You could add
194.150.236.81 ilbm.info www.ilbm.info
to your hosts file to be able to access it. However, it's only a front page with some of his art and... a contact address. ink at ilbm dot info. However, this address will also be dead as long as the domain is misconfigured. However, he still owns the domain, and looking at the whois records, you can find a contact e-mail address.
http://who.is/whois/ilbm.info
Full stop.