WHOIS / RDAP · Tranco graph
Registration data for ~1M Tranco-listed domains
Structured registry fields for domains drawn from the Tranco list—shipped as a gzip tar archive (CSV inside) for a smaller download, with checksums for reproducible research.
Archive: whois_results.csv.tar.gz · inside: whois_results.csv · extract: tar -xzf whois_results.csv.tar.gz
Registry responses as a linked snapshot — not live ranking or traffic.
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What this is
This site publishes a UTF-8 CSV snapshot of WHOIS and RDAP registration fields for domains aligned with the Tranco popular-domain list. The full table is distributed as a gzip tar file (.tar.gz) containing a single file, whois_results.csv, to keep downloads smaller than a raw CSV; the primary download URL is public_archive_url in the dataset manifest (object storage). Row counts, CSV checksum, and archive checksum are in the same manifest. Fields use standard CSV quoting when values 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, the CSV SHA-256 (payload), and optionally the archive checksum from the dataset manifest, plus the filename you used. Treat each release 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 the Tranco input and collection schedule. Each release is a new snapshot—use the build time and checksums on this page (and in the manifest) so others can reproduce which file you used.