Just to chime in.
So the zone file is the file that the search engines use to start every crawl, and yes this works.
There are some well guarded ccTLD public zone files available, that I won’t discuss, nor will I spell out how it can help, because, like some tricks, once it’s out it won’t work. If I posted it here, I would really upset some good friends.
Additionally, it’s a pretty advanced tactic, so not for the faint of heart.
Good luck, keep looking, asking around, you’ll get the answer, but I don’t think you will find it in a public forum.
This is the kind of thing you can only really find out about here http://seoblackhat.com/2009/03/05/2009-seoktoberfest/
http://www.mediadonis.net/?p=410
I’m speaking again this year, it’s worth the cost, not sure if we are sold out this year yet, but you should look into it.