How this works
Two engines: an availability check that refuses to guess, and an appraisal that shows its own arithmetic. Both are versioned — this is method v1, and it changes in public.
1 · Availability: two witnesses, not one
Witness one — the registry
We query the official rdap.register.si service (run by ARNES, Slovenia): 200 means registered, 404 means no such domain, and we also require a real RDAP error body — because under load the service can answer 404 for names that are genuinely taken.
Witness two — DNS
Two independent resolvers (Google and Cloudflare) are asked for NS and A records. Any answer at all means the name is in use or delegated, and it is never called available.
2 · Appraisal: published rules
| Step | What we look at | Effect |
|---|---|---|
| Category | Dictionary word, plural of a word, compound of two words, short brandable, or long-tail | base $190–$760 |
| Length | 6 characters or fewer with meaning · 14+ characters | ×1.18 · ×0.80 |
| Form | Plural of a service word · hyphen · digit | ×1.10 · ×0.50 · ×0.45 |
| Extension coverage | Same string registered in .com (+10%), .ai (+12%), .io/.co/.net/.org (up to +13%) | up to ×1.28 |
| Comparables | Tracked .si sales sharing the name’s opening or closing letters | up to 35% weight |
| Ownership | Name already taken (you must buy from the owner) | ×0.92 |
The midpoint is then reported as a range of roughly 0.55× to 2.1×, because .si sales are sparse and strategic buyers behave differently from investors. Confidence rises with the number of comparables: 234 tracked sales today.
3 · Where the sales come from
- Venue-confirmed: Atom’s weekly .si auctions and registrar-reported results — labelled verified.
- Publicly reported: Sedo, Spaceship, Fruits and private deals published by the parties — labelled reported.
- Never: asking prices, listing prices, or our own estimates. Those distort every market they touch.
- Corrections: if you sold or bought a .si name and our number is wrong, tell us at [email protected] and we will fix it and say so.
Why do you publish the method at all?
Because an appraisal you cannot inspect is a sales pitch. Anyone can recompute our range from the same inputs, and a seller who disagrees with us can say exactly where.
Is this investment advice?
No. Domains are speculative assets; most names never sell. Our range describes what comparable .si names have fetched, not what yours will.
Can I use your data in my own tool?
Yes — the sales index is available as JSON (see the API page), with attribution to worthly.si. Write to us for bulk access.