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 | licensed | 20 % | daily | Measured across 430 threads on 11 Aug 2026: practically the entire sales section is syndicated from DomainLore.uk, Nameshift, fruits.co, Crunch.id, Sedo and NameBio, not one verified sale from a member. The operator has confirmed we may use the forum content, so we show it in the Analyzer — but only as an individually labelled, unverified forum report with an honest origin note per row, never as a comparable sale and never as input to the price range. |
| DNForum SLD Checkerattribution required | Registered domains per extension, status and occupancy | licensed | 100 % | daily | A live check against the operator’s own zone index: one SLD keyword checked across roughly 671 extensions, with a per-extension activity status (active, parked or inactive). This is an observed-activity signal, not a registrar availability check — the operator’s own API documentation explicitly warns against reading “inactive” as “free to register”. Provided by personal arrangement with the operator (chat confirmation, email claim link, tested live); the fuller written confirmation from docs/07 remains outstanding. |
| Consultdomain.deattribution required | Community-reported sales in German-speaking markets | licensed | 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. Same rule as DNForum: shown as an unverified forum report with its origin noted per row, never as input to the price range. |
| Wikidata | Industry, country and website for similar organizations | freely usable | 100 % | daily | Free knowledge base under CC0, no sign-up required. The search runs over the mwapi federation service of the SPARQL interface and is filtered to organizations (wdt:P31/wdt:P279* wd:Q43229). Industry, country and website are optional fields: if a Wikidata entry lacks them, they stay empty here too rather than being guessed. |
| Companies Houseattribution required | UK companies with a matching name | freely usable | 100 % | daily | Public register data under the Open Government Licence v3.0, access via a self-generated API key (Basic Auth, empty password), self-service with no review, active immediately. 600 requests per five minutes. The search only knows name, number, status, type and incorporation date — no industry, which would need a second call per hit (the profile endpoint) that this first version does not make. |
| SEC EDGAR | US companies reporting to the SEC with a matching name | freely usable | 100 % | daily | company_tickers.json is a public, unauthenticated SEC file with ticker, CIK and company name for every company that reports to the SEC (mostly publicly traded). No key needed, but a descriptive User-Agent is required, otherwise status 403 (10 requests per second). A private US company will not show up here. |
| GoDaddy Domains APIattribution required | Availability of domain-hack extensions like de.com/it.com | freely usable | 100 % | on-demand | Read-only, fee-free check-availability endpoint of the GoDaddy Domains API, authenticated with a self-issued access token (Bearer), 60 requests per minute. Covers exactly the extensions the IANA RDAP bootstrap file does not know: private sub-domain registries like de.com or it.com, technically part of the .com TLD but sold as their own zone by CentralNic. |
| ELITEDOMAINS APIattribution required | Real availability check and registration price for the domain search | freely usable | 100 % | on-demand | Personal access token (Bearer, domains:read scope) from the owner’s own ELITEDOMAINS account, after support enables API access. Unlike RDAP, ELITEDOMAINS is itself a registrar and returns a real registration price alongside availability. 600 requests per minute on the standard tier. |
| Constellation Database | Our own sales history and derived figures | freely usable | 100 % | live | — |
| Constellation Brandability Engine | Five structural metrics on name impact, own deterministic methodology | freely usable | 100 % | on-demand | Our own package (packages/brandability-engine), no external licence needed. Fixed, documented weights per metric, see Methodology V1. No AI-generated score. |