On Sat, 18 Oct 2014, Paul Hoffman wrote:
Greetings again. The map and lists at
<http://www.root-servers.org/index.html> have a lot of data that would be
valuable to analyze, particularly how close recursives are to root nodes
(even if that's just geographic/political closeness). RSSAC is just
getting started with publishing reports, and anycast location and
proliferation has not been covered in the reports covered so far.
Has anyone (maybe DNS-OARC?) kept snapshots of this type of data? Any clues
would be appreciated.
For the AS112 project I have used the open resolver data to try and
'count' the number of anycast nodes by unique instances. It would
probably be one more step to infer location - But I'd need to rely on
people taking the advice found in RFC6304 to state their location via the
TXT record. The end-goal of the effort is two-fold:
- how many AS112 servers there are
- where are they and how close are they to each other.
The latter would be an educated guess based on the data. But I think this
is what you are after as well.
https://www.as112.net/2012-survey.html
Wasn't there a draft in DNSOP which would also make anycast nodes more
easily identifiable?
wfms
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