Source Registry
Every source with its role, licence status, weighting and refresh cycle. Only sources marked freely usable or licensed may reach a release. The code enforces that, not a person.
Sources
| Source | Role | Licence | Weight | Refresh | Note |
|---|---|---|---|---|---|
| RDAP | Domain age, status, registrar, nameservers | freely usable | 100 % | daily | The official successor to WHOIS, mandated by ICANN, free of charge. |
| ICANN CZDS | Zone data, new registrations, deletions | access pending | 100 % | daily | Access is requested per extension. Comparing zone files replaces scraping. |
| NameBioattribution required | Comparable sales | access pending | 35 % | daily | The paid API may only appear in a product with prior written permission. The request to api@namebio.com is pending. Until it clears, do not ship it. |
| NameBio Free APIattribution required | Market level per extension, Verisign drop order | freely usable | 30 % | daily | Their API documentation explicitly permits use in a product, subject to attribution. So we only reproduce what NameBio publishes itself: market level per extension and the drop order, unchanged and labelled as a NameBio figure. We do not derive our own price for a domain from it, because section 1.2.4 of their terms names appraisal systems and pricing models explicitly. A request for written permission is out. |
| Dynadot API | Auctions, closeouts, hammer prices | blocked | 20 % | live | Unusable after review: the endpoint returns only auctions from our own account, and the terms of use forbid embedding API data in other applications. |
| DataForSEO | Search volume, CPC, competition | access pending | 15 % | weekly | Batched in the standard queue, USD 0.06 per 1,000 keywords. |
| USPTO | Trademark risk United States | freely usable | 100 % | weekly | There is no official search by mark text. TSDR only returns the status of a number you already know. The licence-compliant route is importing the register as bulk data and searching our own database. |
| EUIPO Trademark Search | Trademark risk European Union | access pending | 100 % | weekly | Official search by mark text via RSQL, OAuth2 client credentials. Create an app at dev.euipo.europa.eu. Sandbox is active immediately, production only after identity documents are reviewed. |
| GoDaddy GoValueattribution required | Second opinion on valuation | access pending | 10 % | on-demand | Not our valuation, but a comparison figure beside it. |
| GLEIF LEI-Register | Companies with a matching name, worldwide | freely usable | 100 % | daily | The global LEI register, usable under CC0 without sign-up, 60 requests per minute. Sole proprietors are excluded: there the name field holds a person, and a CC0 release does not replace a data-protection basis. Address fields are not taken over. |
| ICANN Monthly Registry Reportsattribution required | New registrations, renewals, transfers and deletions per extension | access pending | 100 % | weekly | The files are freely retrievable, but no licence or reuse statement is findable, and ICANN’s terms of service expressly grant no reproduction rights. Freely reachable is not the same as freely usable. A request to ICANN is needed. On top of that, each month only appears after a three to four month delay. |
| DNForumattribution required | Community-reported sales | access pending | 20 % | daily | Measured across 430 threads on 11 Aug 2026: 93 per cent of the sales section is syndicated from DomainLore.uk, Nameshift, fruits.co, Crunch.id, Sedo and NameBio, 7 per cent are pinned guides, two posts came from members and neither reports a sale. There is nothing here for the operator to grant us. The data sits with the five supplying companies. |
| DNForum SLD Checkerattribution required | Registered domains per extension, status and occupancy | access pending | 100 % | daily | The operator’s own zone index, reported as 321 million domains across 1,268 extensions with a daily status scan. The operator has promised an API but it is not available yet. Until then we deliver nothing from this source. |
| Consultdomain.deattribution required | Community-reported sales in German-speaking markets | access pending | 20 % | daily | Measured on 11 Aug 2026: the sold-domains section held 20 entries, all syndicated from fruits.co, Nameshift and Sedo, not a single one from a member. The operator can grant us the forum, not the data of those third parties. Permission by phone exists; usable sales of their own do not, so far. |
| Constellation Database | Our own sales history and derived figures | freely usable | 100 % | live | — |