Sep 28 – 29, 2020 AGM
UTC timezone

Clouding up the Internet: how centralized is DNS traffic becoming?

Sep 28, 2020, 2:00 PM
Standard Presentation Online Workshop OARC 33 Day 1


Wes Hardaker (USC/ISI)


Concern has been mounting about Internet centralization over the few last years -- consolidation of traffic/users/infrastructure into the hands of a few market players. We measure DNS and computing centralization by analyzing DNS traffic collected at a DNS root server and two country-code top-level domains (ccTLDs) -- one in Europe and the other in Oceania -- and show evidence of concentration. More than 30\% of all queries to both ccTLDs are sent from 5 large cloud providers. We compare the clouds' resolver infrastructure and highlight a discrepancy in behavior: some cloud providers heavily employ IPv6, DNSSEC, and DNS over TCP, while others simply use unsecured DNS over UDP over IPv4. We show one positive side to centralization: once a cloud provider deploys a security feature -- such as QNAME minimization -- it quickly benefits a large number of users.


We'll present our recently accepted short paper that we submitted to IMC.

Talk Duration 20 minutes
Your consent for us to publish your name and<br />affiliation as a Speaker on the OARConline 33 website Yes

Primary authors

Wes Hardaker (USC/ISI) Giovane Moura (SIDN Labs) Sebastian Castro (InternetNZ) Cristian Hesselman

Presentation materials