DNS query duplication
In the DNS, name resolution space queries are free. To what extent do we see over-querying on the part of recursive resolvers in the DNS?
Cold start DNS
There is an obvious tension between resilience and speed in the design of a resolver’s query strategy. DNS cold starts bring that tension into focus.
Centrality in the Internet’s names
The Internet’s Domain Name System undertakes a vitally important role in today’s Internet. The question here is — is the DNS centralized?
Authoritative DNS over encrypted transport at OARC 45
The use of encrypted DNS transports for communication between recursive resolvers and authoritative services in the DNS was an important topic of discussion OARC 46 in Edinburgh.
Direct‑to‑device and the return of LEO ambitions
LEO satellite networks are returning to the mobile market, this time shaped by lower launch costs and changing industry economics, with lessons from Iridium still looming.
Rolling the root key
Have DNSSEC-validating recursive resolvers updated their Trust Anchor sets to include KSK-2024, and how can we measure whether this transition has been successfully adopted?
Revocation of X.509 certificates
‘Revocation is broken’ is a catchphrase in the world of certificates and Certificate Authorities. Certification infrastructure may not have been designed for the Internet of today.
CDNs, optical communications, and AI at NZNOG 2026
Geoff Huston attended NZNOG 2026, and shares some of what he found interesting.
The last time
Understanding how different platforms count time — and when those counters expire — is essential for operators preparing their systems for the next wave of rollover milestones.
The why and what of the CIDR Report
Geoff Huston explains the reasons for the CIDR Report, what’s in it, and shares some thoughts as to its usefulness to the Internet routing community today.