Free · no account · live availability signals
Type a name once and compare live availability signals across the full supported list, with name ideas and domain research built in. Unknown results stay marked unknown until a registrar confirms them.
328 extensions checked on every keystroke — no account, no popups.
Three steps, no sign-up, and nothing hidden behind a checkout flow.
Results start streaming before you finish the word. No extension picker, no search button, no page reload between checks.
Every extension is queried in parallel and grouped by category, so you compare the obvious .com against tech, country and budget alternatives side by side.
Open any name in research to see its full history and footprint, then jump straight to checkout with the domain already filled in.
Most checkers make you choose an extension first and answer one question at a time. FlashDomains inverts that: the name is the query and the namespace is the answer. Filter to available results or narrow to a category when you already know the shape of the brand you want.
When the exact name is gone, the generator builds brandable coinages, compounds, prefixed and suffixed variants and clipped forms from your keyword, then checks each idea live as it appears. Nothing on the list is a dead end you have to re-verify by hand.
Availability is only half the decision. Research pulls the registry record, DNS and mail setup, detected hosting signatures, archived snapshots and handle checks into one dashboard. Inferred provider labels are shown as detections, not guarantees.
Compare a .com against .io, .ai and .co before the name is locked into a deck.
Compare available names, then verify both first-year and renewal pricing at checkout.
Check the country extension and the global .com in the same pass.
Test .shop, .store and .co alongside the exact-match .com.
Try .design, .studio, .me and first-name-last-name combinations.
Use research to check history, backlinked past lives and expiry timing.
| FlashDomains | Typical registrar | |
|---|---|---|
| Extensions per search | Hundreds, in parallel | One, then upsells |
| Speed | Streams as you type | Submit and wait for a page load |
| Data source | RDAP registry data plus DNS | Inventory-driven suggestions |
| Name ideas | Generator with five idea styles | Random suffix padding |
| Due diligence | History, DNS and handle checks | Add to cart |
| Account required | Never | Usually |
Each guide covers who the extension suits, who runs the registry, any registration restrictions and how it is usually priced.
.com is a generic top-level domain delegated in 1985 and operated by Verisign. Registration is open through accredited registrars; availability and pricing must be confirmed for the exact name.
.ai.ai is Anguilla's country-code top-level domain. It is also widely used by artificial-intelligence products, but the registry classification remains a ccTLD and current registration terms belong to the registry and registrar.
.io.io is the country-code top-level domain for the British Indian Ocean Territory. Technology teams often read “io” as input/output, but it remains a ccTLD and prospective buyers should verify current registry terms.
.co.co is Colombia's country-code top-level domain. It is marketed internationally as a short option for companies, while its authoritative classification and manager are recorded by IANA.
.app.app is a generic extension operated by Google Registry. Every .app domain is on the HSTS preload list, so browsers require HTTPS — a certificate is mandatory, not optional.
.dev.dev is a Google Registry extension aimed at developers. Like .app, it is HSTS preloaded, so HTTPS is required for every site.
.org.org has been open since 1985 and is associated with nonprofits, open-source projects, standards bodies and community groups — though anyone may register one.
.net.net was originally intended for network infrastructure providers and is now open to everyone. It remains one of the most recognised alternatives when the .com is unavailable.
A practical, tested checklist for picking a domain name that is easy to say, easy to spell, legally safe and still available across the extensions you care about.
8 min readRDAP, WHOIS, DNS lookups, registrar inventory and premium pricing — what each source can honestly tell you about whether a domain is really free.
8 min readWhy some available domains cost hundreds of dollars, how registry premiums differ from aftermarket sales, and a clear framework for judging whether a name is worth the money.
8 min readWhen a newer extension like .ai, .io or .app is the right call, when you should keep hunting for a .com, and a decision rule you can apply in five minutes.
Yes. Searching, generating names and running domain research are all free, with no account and no request limits for normal use.
FlashDomains discovers RDAP services from IANA's bootstrap registry and uses DNS as a second signal. Not every extension returns a conclusive public answer, so uncertain results stay marked unknown for confirmation at the registrar.
No. Registries reserve some names as premium and price them well above the base rate, so always confirm the first-year and renewal price at checkout before you commit.
Every keystroke checks the full supported extension list and groups results into popular, technology, business, creative and country categories. The displayed total comes directly from that list.
Yes. Type the full suffix and it is parsed and checked against that country registry, then pinned to the top of your results alongside the .com equivalent.
Registrar and registration dates, DNS and mail configuration, hosting and CDN fingerprints, archived history, whether a live site is parked, and whether the matching handle is free on the major platforms.
Scroll back up and start typing — results appear before you finish the word. Good domains get snapped up fast.