Hi, NANOGers.
Rodney Joffe (thanks, Rodney!) correctly pointed out that my gTLD
monitoring was only tracking the Verisign gTLD (com, net, org) name
servers. I have now added the other TLDs to the mix. It can all
be found in two places:
http://www.cymru.com/DNS/
http://bgp.lcs.mit.edu/dnsmirror/
I will shortly have an additional web server on a much faster set
of links, as well as another mirror. For the impatient, I
recommend the MIT site. Don't forget to check the Lame Report
while you're there. 
Comments and feedback are always welcome!
Thanks,
Rob.