Free domain tools

Search, generate and research domains in one place

FlashDomains checks availability against official registry data across 332 extensions, brainstorms brandable alternatives, and shows you everything public about a name before you buy it.

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Live registry data across 300+ extensions. Free, no signup.

Instant domain search

Type a name once and see live availability across 332 extensions, sorted into categories with a cheapest-first view.

Results stream in as you type — no submit button
Registry-level RDAP data, with DNS as a second signal
Filter to available only, or search within extensions

Domain name generator

Turn one keyword into brandable, compound, prefixed and suffixed name ideas, each checked for availability as it is generated.

Five idea styles from literal to invented
Fans each idea across core extensions
Every suggestion is checked, not just listed

Domain research

For any name, pull the registry record, DNS and mail setup, live site content, history and handle availability into one dashboard.

Registrar, registration and expiry dates, status codes
DNS host, mail provider, SPF and DMARC presence
Handle availability across developer and social platforms

Why the results are trustworthy

Live, not cached

Every result comes from a query made when you type it, not a stale availability list.

Cheapest first

A dedicated view ranks the lowest-cost extensions so a side project does not cost a fortune.

Saved on your device

Star names to build a shortlist. History and recommendations stay in your browser.

Looking for a specific extension?

Read what each extension is for, who can register it and what to watch out for.

Browse the extension directory