This repository is a community-maintained domain classification dataset used by V2Ray/Project V for geosite routing. It contains over 1,500 plaintext list files organized by company, service, region, or functional category (e.g., ads, AI, education, porn). Each file uses a compact rule language supporting domain, full, keyword, regexp entries, attributes (@cn, @!cn, @ads), and include directives for hierarchical composition. A Go builder (main.go) compiles these lists into a protobuf binary (dlc.dat) with deduplication, redundant subdomain pruning, and optional custom profile assembly. A companion tool (cmd/datdump) reverses the binary back to plaintext for auditing. The repository is primarily a data pipeline: raw curated lists are transformed into a consumable routing artifact. While the Go tooling is essential, the core value lies in the curated data and its modular, attribute-based taxonomy. This hybrid nature (data with application tooling) is typical of domain-specific datasets that require compilation.