In order to make the graph somewhat viewable it was limited to hosts that shared 10 or more links. You should be able to zoom/pan on portions of the graph, and hover over a node to see the hostname. Node colors reflect org, com, gov, edu, net, other.
If your screen goes crazy cross your fingers and try to reload the page a couple times. More about how this graph was generated can be found on Github. The underlying data has been made available using VoID rdf/xml and Turtle documents.