This repository is a curated DNS blocklist project providing domain lists for categories like ads, malware, phishing, tracking, and more. It is primarily a data resource, but includes a sophisticated Python-based build pipeline, automated issue triage, upstream monitoring, and CI/CD workflows. The codebase is config-driven, with reusable modules for domain normalization, validation, format conversion, and merging. The project outputs lists in multiple formats (hosts, AdGuard, dnsmasq, plain domains) and is designed for integration with Pi-hole, AdGuard Home, and similar tools. While the domain lists are the primary artifact, the supporting infrastructure demonstrates strong data engineering practices, including automated testing, structured logging, and exception handling. The repository has a large issue backlog but active maintenance with frequent commits and automated workflows.