An Italian case study: Collateral damage from live-event site blocking with Piracy Shield
Guest Post: Italy’s Piracy Shield blocks IPs and domains within minutes, but measurements show broad collateral damage to legitimate services.
Tag: DNS
Autocast: Automatic anycast site optimization
Guest Post: Automatically selecting the optimal anycast locations for fast .nl response times worldwide.
[Podcast] Measuring RSSAC047 Conformance
Measuring the measurements: Duane Wessels (Verisign) and Moritz Mullër (SIDN Labs) examine the effectiveness of ICANN’s RSSAC047 metrics for the DNS Root.
From OpenDNSSEC to Knot DNS
Guest Post: How to use Knot with HSMs, seamlessly transition from OpenDNSSEC, and switch to in-memory keys.
Governance of the DNS root zone
ICANN is accepting public comments on the Functional Model for Root Server System Governance until 22 September 2025.
The impact of expanding AuthDNS with a new node in the Philippines
Guest Post: Recently, the RIPE NCC activated a new AuthDNS node in Makati. What impact did this have on local DNS clients and on the overall AuthDNS system?
DNS at IETF 123
DS automation, Domain Control Validation, .internal and delegation, and more from the DELEG and DNSOP Working Groups at IETF 123.
SIEVE — a better algorithm than LRU?
Guest Post: Introducing SIEVE — a simpler algorithm than LRU that delivers better efficiency and scalability for web cache workloads.
Experimental support for AF_XDP sockets in NSD
Guest Post: Exploring the promise of fast-path DNS delivery through XDP, and the pain points that come with it.
Event Wrap: APAC DNS Forum 2025
Joyce Chen presented on the ICP-2 Review at the APAC DNS Forum 2025, held in Hanoi, Vietnam from 8 to 9 May 2025.