findur.link

Type a word, findur.link builds every plausible domain out of it — dropped vowels, -ly/-ify/-hq suffixes, plurals, doubled consonants, compounds of your terms, and TLD-hack splits like delicio.us — then checks them. One word against all 523 supported TLDs generates 4,707 candidates; three words generate 17,782. Hacks are drawn from a curated 136-TLD set of endings that actually read as words, and ranked so the good splits float to the top.

The engineering is in the answer, not the guessing. A DNS NXDOMAIN does not mean a domain is buyable — plenty of registered names are parked with no A record. So every candidate goes through two phases: DNS over HTTPS across three providers round-robin, then, for anything that looks free, a query to that TLD's own RDAP registry endpoint, resolved live from IANA's bootstrap file rather than a hardcoded list or a middleman. Registry 404 means available. Registry 200 means taken, even though DNS said otherwise. A rate limit or timeout means likely available, and the app says so instead of pretending. Five states, not a boolean.

There is no backend. The site is a static SvelteKit SPA on GitHub Pages that picks its own resolver at load: a Cloudflare Worker that streams 500-domain batches back over SSE at 20 in flight; the browser itself, running the same DoH + RDAP logic with an 8-way concurrency limiter; or — if you run npx findurlink — a local server that shells out to real dig and whois, parses raw whois text, and rides out registry rate limits with exponential backoff and per-TLD cooldowns. It finds that local server by quietly probing nine localhost ports, and deliberately skips the scan on a first visit so the browser never throws a private-network permission prompt at you. Watch a domain and it re-checks on a timer and keeps its status history. Live Porkbun pricing drives renewal-cost filters and a "sold by all four of my registrars" cross-check. All of it, including the Cloudflare deploy, was built from an Android phone — which took patching esbuild, rollup, lightningcss and workerd to admit that android arm64 and linux arm64 are the same silicon.