Dear Misha and Nick,
Thank you for sharing the results of your (MSc?) research project.
Clear and informative graphs of your measurements.
A suggestion. When inspecting the probe maps, Europe is
over-represented, which is no surprise given the number of probes in
this region. But when you select 400 probes, you can "steer" the
selection for better global coverage. In the probe selection, you can
specify the West, North/South-Central and North/Southeast area and the
number of probes per area. Perhaps this will allow you to better spread
the available probes over the different areas for a "balanced" global
measurement.
You already present the selection of regions on the web page, but for
Africa this results in 7 (successful) probes for January 2023.
Cheers,
-- Benno
On 23/03/2023 23:56, Michael Rabinovich wrote:
Folks,
FYI, Nick Kernan, my Masters student, has deployed a web portal that
facilitates the comparison between various DNS resolvers, including
ISP-provided and some influential publicly available resolvers (Google’s
public DNS, OpenDNS, Quad9, and Cloudflare). The comparison is based on
two factors: the latency of DNS resolutions and the latency of TCP
handshake with the CDN edge server selected through a given resolver.
The results are based on recurrent monthly measurements from RIPE
Atlas probes that have both IPv4 and v6 connectivity, have an
ISP-provided resolver available for comparison, and which meet certain
requirements regarding probe versions and reliability. You can specify
the desired month of measurement, a region of interest, and the CDNs to
analyze. You can access Nick’s portal through
https://dns-web-portal.netlify.app/ <https://dns-web-portal.netlify.app/>
The details of the methodology are in Nick’s thesis, which awaits some
copyright permissions before being made publicly available. In the
meantime, Nick (cc’ed) and I would be happy to answer any questions.
Regards,
—Misha Rabinovich
--
Benno J. Overeinder
NLnet Labs
https://www.nlnetlabs.nl/
--
ripe-atlas mailing list
ripe-atlas@ripe.net
https://lists.ripe.net/mailman/listinfo/ripe-atlas
