For information (or advices or ideas or jokes). You can read the whole
thread online at
<https://lists.dns-oarc.net/mailman/listinfo/dns-operations>.
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I've assembled a collection of graphs of zone and name server trust
dependencies for each ICANN TLD at
http://shinobi.dempsky.org/~matthew/dnstrust/graphs/
I've heard claims from some TLD operators that extra dependencies are
actually intentional, but I haven't yet heard any arguments to justify
that claim. Can anyone here offer arguments in favor of making TLDs
dependent name servers other than the ones authoritative for that TLD?
I plan to automate regenerating the graphs on a regular basis and to
start contacting TLD operators to point out particularly egregious
cases (e.g., .cn is dependent upon 247 extra name servers, many US
based, because of a single NS record), but I thought I would first
raise the matter here in case anyone had useful feedback.
Thanks.
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