Monitoring highly distributed DNS deployments: Challenges and recommendations
Guest Post: The root server system highlights the challenges operators and researchers face when monitoring highly distributed DNS deployments from the outside.
Tag: DNS
40 years of .com — from HOSTS.TXT to global infrastructure
The evolution of domain name services and Verisign’s role in shaping the modern Internet.
DNS at IETF 122
A roundup of new documents, current work, and new work from DNSOP.
[Podcast] DNS computer says ‘NO’
Geoff Huston discusses novel ways to make saying ‘no’ in DNSSEC cheaper and faster, and explores the standards process around formalizing this choice.
The root of the DNS
Opinion — How is the root zone service ensuring capacity growth to meet rising query rates?
Notes from OARC 44
DNS traceroute, virtual vs bare metal servers, packet sizes, and more from OARC 44.
Measuring DNS root servers under change
Guest Post: Root server co-location is prevalent but mostly low, with ∼70% of vantage points observing co-location of at least two servers globally.
Event Wrap: OARC 44
Geoff Huston presented on ‘Authoritative Nameserver Selection and Recursive Resolvers’ at OARC 44 held online and in person in Atlanta, Georgia on 6 and 7 February 2025.
Preparing for Encrypted Client Hello (ECH)
Guest Post: How we defend our systems has shifted. Here’s what organizations and schools need to know.
[Podcast] How many DNS nameservers is enough?
Geoff Huston examines the number of nameservers assigned to domains and the potentially inefficient methods used to select which one is queried.