WHOIS / RDAP · Tranco graph
Registration data for ~1M Tranco-listed domains
Structured registry fields for domains drawn from the Tranco list—built for security research, reproducible measurements, and datasets you can cite by checksum.
File name: whois_results.csv
Registry responses as a linked snapshot — not live ranking or traffic.
More downloads
Optional: set public_csv_url in meta.json after you publish the file to R2.
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About
What this is
This site publishes a comma-separated snapshot of WHOIS and RDAP registration fields for domains aligned with the Tranco popular-domain list (row count and checksum are in meta.json). The file is UTF-8 with standard CSV quoting when fields contain commas.
Good for
Security research, Internet measurement, and any study that needs a fixed domain set and a citable, reproducible snapshot of registration metadata alongside a ranking-style input list.
Not a substitute for
Site content, traffic rankings, malware verdicts, or hosting location. Data come from registry/registrar responses at collection time, not from crawling or DNS beyond what appears in the exported fields.
Citation
When you publish results, cite the build time and SHA-256 (or full hash) from meta.json, and the URL or artifact name of the CSV you used. Treat each file as a point-in-time snapshot, not a live API.
Limitations
Many columns may be empty because of privacy or registry policy; TLDs differ in what they expose. Information reflects the registry at query time and can change without notice.
Updates
Refresh cadence follows your Tranco input and crawler schedule. Re-run the build script to emit a new meta.json for each release you want others to reproduce.