I'm not coming up with anything for that Certification # either, weird. Mine sure did though. I will test a few more cert numbers of mine to see.
When I typed in the Cert# for my Issue 1, it popped up in the search results under the CGC registry website, there were 3 different links. When clicked on any one of them it took you to the CGC page where you can see the comic name, set name and the owners screen name and in turn the owners profile page. I don't know that I like that.
Try a few other cert numbers and see if anything comes up.