Fast, ultra-customizeable, pluggable DNS server (forwarding, recursive, or none) with caching, filtering, routing, DNSSEC, admin UI, and plugins. UDP/TCP/DoT/DoH.

An interactive network protocol visualizer that traces the full journey of a web request. Watch DNS resolution propagate from Root to Authoritative servers, visualize TCP/TLS 1.3 handshakes, and generate AI-powered security audits for any domain.

Minimalist DNS resolver built from scratch to learn the DNS protocol.

Integrated DNS-based ad and tracker blocking for ISP networks. Implements high-performance sinkholing to filter advertising and malicious domains at the network level, reducing bandwidth consumption and enhancing privacy for all subscribers.

A document to describe a mechanism for recursive resolver operators to distribute the IP blocks their servers are using, possibly with locations.