Carl Gahnberg has a new post highlighting ISOC's new resources for legal professionals on mandated DNS blocking. If you need to explain the technical realities of the Domain Name System to courts or policymakers, start here:
https://www.internetsociety.org/blog/2026/04/dns-blocking-mind-the-unintended-consequences/
DNS Blocking: Mind the Unintended Consequences - Internet Society

As DNS blocking mandates multiply, so do concerns about security, the openness of the Internet, and fragmentation.

Internet Society
Repurposing the Internet's naming system for public policy is blunt, costly, and counterproductive. It breaks legitimate services, undermines authenticated DNS, and does not actually remove targeted content from the Internet.
"Mandated DNS Blocking: A Guide for Legal Professionals" is an in-depth reference detailing the collateral damage of these measures. It outlines how blocking fragments the Internet and forces significant costs on operators. https://www.internetsociety.org/wp-content/uploads/2026/03/Mandated-DNS-Blocking-Full-Paper.pdf
Need a concise version to submit to a court? Litigants globally use our shorter brief, "Mandated DNS Blocking: Critical Considerations," as evidence to clearly explain these technical limits. https://www.internetsociety.org/wp-content/uploads/2025/11/Mandated-DNS-Blocking.pdf