>
> Bill Manning writes:
> > the quarterly DNS audit trys to hit every delegation
>
> But it fails to do so. You have an undisclosed number of AXFR rejections
> leading to an unknown number of servers. What you're surveying are DNS
> servers whose parents allow promiscuous AXFR---basically, whose parents
> are old, badly managed sites. You're missing a huge number of 3LDs.
>
> My survey a year ago (http://cr.yp.to/djbdns/dns1.html) located 487828
> different IP addresses for 599366 DNS server names. This is far more
> than the 100581 found by your broken survey mechanism.
>
> ---D. J. Bernstein, Associate Professor, Department of Mathematics,
Your survey is published as a .COM survey. The preliminary
numbers I used was selected to most closely match 100,000
servers from a variety of zones, most outside the US, making
percentage estimates painfully obvious.
I expect to have the full suite finished, including .COM
early in the week... We'll take the .COM data independently
and, allowances for the disparity of a year, we should see
some useful trends emerge.
--bill
.
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