> On 17 Apr 2025, at 08:39, Joe Abley <[email protected]> wrote: > > Whether or not people use INTERNAL is an entirely untested question. Perhaps > if we had statistically-significant data that showed leaked INTERNAL queries > actually existed and represented some kind of real problem, we could imagine > thinking about a solution. We do not have such data.
We do/did have some data on that Joe. Though it may well be out of date. Queries for .internal names were a very significant element in the DITL datasets used for ICANN's name collision study in 2013. .internal was in the top ten TLDs that were found, more than any ccTLD. See table 3 in https://www.icann.org/en/system/files/files/name-collision-02aug13-en.pdf. ISTR significant numbers of .internal names showed up in X.509 certificates around then too. At that time, nobody was particularly bothered about how often .internal names hit the root or were found in X.509 certs. The focus was on the names of the wannabe TLDs that had been applied for and ICANN intended to add to the root. Some of those TLDs didn't make it. :-) I don't have access to that data any more. The derived (and transient) results were deleted a few months after the study was published. However the many terabytes of DITL data are still around at DNS-OARC if someone wanted to take another look.
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