On Tue, 2 Oct 2007 01:48:36 -0600 Danny McPherson <danny@xxxxxxx> wrote: > Again, any pointers empirical data along these lines would > be appreciated. I said this awhile back: <http://www.merit.edu/mail.archives/nanog/msg02196.html> "As a datapoint I ran some tests against a reasonably diverse and sizeable TLD zone I work with in another forum. I queried the name servers listed in the parent to see if I could successfuly query them for their corresponding domain name they are configured for using TCP. Out of about 9,300 unique name servers I failed to receive any answer from about 1700 of them. That is a bit more than an 18% failure rate." I think I overcompensated as I later found what looked like BIND 8 servers being unresponsive for multiple TCP queries in queue. I let the numbers stay, since the percentage of those servers were fairly small and, well, they were BIND 8 and probably have other problems anyway. :) John _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf