Edward Lewis wrote: > At 12:57 -0800 12/3/07, Brian Dickson wrote: > >> What are the pros/cons of this, other than the obvious offloading >> of junk TLD lookups? > > From http://www.nanog.org/mtg-0310/pdf/wessels.pdf: > > See (unnumbered) slide "Punchline from Last Year's Talk": > > Category Percent of Total (see slide for all cat's) > Unknown TLD 12.5 > ... > Legitimate 2.15 > > Of course, that is 2002/2003 data. > > 6:1 "bad TLD" to "good query." Off-loading bad TLDs from the roots is a > big win. As with any research citation, I encourage readers to look it > up too - to see if you agree with what I yanked out.
Sorry for the late response. About this matter, using the data collected at the root server instances participating in DITL 2007, we found 24.73% of the queries seen at the roots were for invalid TLD's. Doing an analysis per root, the numbers vary C-root 19.15% F-root 46.79% K-root 10.01% M-root 20.96% within the queries for invalid TLD, the distribution is local 20.29% localhost 8.92% domain 3.15% invalid 2.43% lan 2.06% belkin 1.76% home 1.30% localdomain 1.29% wpad 0.74% txt 0.74% You may want to check the presentation including this numbers at http://public.oarci.net/files/workshop-2007/Castro-DITL2007-analysis.pdf Regards Sebastian Castro, CAIDA _______________________________________________ DNSOP mailing list DNSOP@ietf.org https://www.ietf.org/mailman/listinfo/dnsop
