domaindex lets you batch-query any keyword across every TLD in seconds.
enter a keyword or paste a domain / URL
what is domaindex?
domaindex is a thin, fast index over RDAP designed for domain hunters and developers. No account required, no registrar lock-in. Enter a keyword and domaindex returns a comprehensive report of availability across every TLD you care about. Built for speed, transparency, and convenience.
- parallel queriesdomaindex fires up to 30 RDAP requests in flight at once. Results land as they resolve, not after the slowest TLD finishes. This parallel architecture means you see available domains immediately, without waiting for stragglers.
- one-click registrar handoffWhen domaindex finds an available domain, you can register it immediately. Every result links directly to Namecheap, Porkbun, or GoDaddy — no copy-paste detour, no intermediate landing pages.
- custom suffix setdomaindex lets you pick from gTLDs, ccTLDs, and IDN suffixes to match your search intent. Your selection is remembered locally and encoded in the URL. Share the link and anyone gets your exact query and TLD selection.
- no account requireddomaindex runs entirely on Cloudflare Workers and D1. There is no sign-up gate, no usage quota, no tracking pixels, and no dark patterns. Search as much as you want — domaindex collects nothing.
why choose domaindex
Most domain checkers force you to search one TLD at a time, or lock you into a single registrar ecosystem. domaindex takes a different approach: batch queries across every TLD, transparent RDAP protocol, and zero vendor lock-in.
- speedTraditional domain checkers query TLDs sequentially. domaindex queries up to 30 TLDs in parallel, so you see results in seconds instead of minutes. No artificial delays, no waiting for slow registries to respond before showing fast ones.
- transparencydomaindex queries RDAP directly — no proprietary APIs, no hidden caches, no mystery data sources. Every result comes from the official registry. You see exactly what domaindex sees, with raw RDAP responses available on demand.
- no lock-inMost domain tools push you toward their own registrar or affiliate. domaindex links to Namecheap, Porkbun, and GoDaddy with equal weight and earns nothing from clicks. You choose where to register based on price and trust, not where domaindex steers you.
- open protocolWHOIS is inconsistent, often rate-limited, and varies wildly by registry. RDAP is standardized, machine-readable JSON. domaindex uses RDAP exclusively, which is why it can query so many TLDs reliably and in parallel.
how domaindex works
type a keyword
Enter any word, brand name, or acronym into domaindex — letters, digits, and hyphens only. The moment you hit search, domaindex begins querying every TLD in your set simultaneously. No sequential polling, no artificial delays.
pick your TLDs
Choose from curated presets (Startup Picks, Create, Sell, Regional) or build a custom set from 100+ supported TLDs. Your selection is saved locally in your browser and encoded in the URL. Share the link and others see your exact domaindex query and TLD configuration.
get live results
domaindex fires 30 parallel RDAP queries and streams results in real time. Available domains appear instantly with one-click registrar links. Taken domains show registration date, expiry, and registrar. You never wait for the slowest registry — domaindex delivers speed and transparency.
domaindex TLD coverage
domaindex indexes over 750 top-level domains from the IANA root zone, covering generic TLDs, country-code TLDs, and internationalized domain names. Every TLD with an active RDAP endpoint is queryable through domaindex in real time.
- Startup Picks.com.net.org.io.ai.app+12 more
- Create.design.studio.art.ink.photos.photography+5 more
- Publish.blog.news.press.media.page.site+4 more
- Sell.shop.store.com.co.online.market+4 more
- Regional.ar.br.ca.ch.cl.cn+20 more
- All gTLDs500+ generic top-level domains indexed by domaindex
- All ccTLDs250+ country-code top-level domains indexed by domaindex