Where can I find a list of bittorent dht bootstrap nodes?

Question

Using my google-fu I was able to find only a few nodes:
router.bitcomet.com, router.utorrent.com, router.bittorrent.com

Is there somewhere a list of all bootstap nodes which I'm not aware of? Where do the torrent client developers get addresses of the bootstrap nodes? (I've looked at deluge source code and seen the modes above hardcoded.)