Free AI Domain Name Generator and Availability Checker

What a domain name generator actually does

A domain name generator turns a description of your business into available domain name ideas, so you stop checking names one at a time and finding out they are gone. This one does two jobs in a single pass: an AI writes 12 candidates spread across five naming styles, and every candidate is immediately checked against live registry data before you see it. Nothing on the list is a name you cannot have without being labeled as such.

Most naming tools do only the first half. They hand you a wall of suggestions and leave the checking to you, which is where the time actually goes. The other common shape is a registrar's tool, which checks availability properly but has a commercial reason to steer you toward whatever it wants to sell. We do not sell domains at all, so the suggestions are not weighted by margin.

The five naming styles it generates

Every run deliberately spreads across five styles rather than returning twelve variations of one idea. Founders usually do not know which direction they want until they see the options side by side.

If you already know your direction, say so in the description. Ask for a coined one-word brand, or a compound of two real words, and the set will lean that way.

How to use keywords to get better names

The single biggest lever on output quality is the description you type, and most people under-describe. Keywords alone give the generator almost nothing to work with, so it returns literal mashups of the words you supplied.

Compare meal planner app with AI meal planner for busy parents who hate grocery shopping. The second names an audience, a feeling, and a job to be done, so the generator can reach for words about time, families, and kitchens rather than recombining "meal" and "planner". Three rules that consistently help:

• Name the audience. "for freelance photographers" changes the whole vocabulary of the output.
• Say what it removes. Products are usually named after the relief they provide, not the mechanism they use.
• Do not stack synonyms. Listing five words for the same concept narrows the space instead of widening it.

If a run returns nothing you like, rewrite the description rather than pressing generate again. A new description explores a genuinely different region; the same one explores the same neighbourhood.

How the availability checker actually works

This is the part most generators are vague about, so here is exactly what happens when a name appears on your screen.

1. RDAP first, for generic extensions. For .com, .net, .app, .dev and other gTLDs we query RDAP, the official registry protocol that replaced WHOIS. A 404 means the name is not in the registry, so it is available. A 200 means it is taken.
2. WHOIS fallback, for country-code extensions. Extensions founders love but that do not expose RDAP, including .io, .co and .ai, are looked up over a direct WHOIS connection on port 43 and the response is parsed for registration markers.
3. DNS only as a supporting signal. If a name resolves to nameservers it is almost certainly taken. We use that to confirm a negative, and we never mark a domain available on DNS alone, because plenty of registered domains have no DNS records at all.
4. Ambiguity is labeled, not guessed. When a registry returns something we cannot read conclusively, the name is shown as Check manually.

That last step is a deliberate trade. We could resolve every ambiguous case by guessing and show a cleaner screen. A false "Available" costs you an afternoon and a small heartbreak, so we would rather be honestly uncertain on a few names than confidently wrong on any. Up to 20 names are checked per batch, and every result reflects the moment we looked, so confirm at a registrar before you rely on it.

What a brandable domain actually looks like

"Brandable" usually gets defined as short and invented. We checked that against 28,000+ companies with live payment processing, and the real distribution is not what the naming guides describe.

• The median domain is 11 characters, with a mean of 11.7.
• Only 7.6% are five characters or fewer, and 26.3% are 15 characters or more.
• Hyphens appear in 6.6% and digits in 3.3%, so both are minority choices rather than disqualifying ones.
• Venture-funded companies are the exception, not the rule: median 8 characters and 68.6% at nine characters or fewer. Short abstract domains are expensive, so they mark companies that had money to spend.

The practical definition of brandable is therefore not "short". It is unambiguous out loud. Say each candidate to another person and have them type what they heard. That one test catches homophones, doubled letters and spelling traps that no availability check can, and it is the only property of a domain that keeps costing you money for as long as the company exists. The full breakdown is in our study of domain name generators.

Does your category actually need a .com?

Only 54.6% of companies taking live payments run on a .com, which means 45.4% are collecting real money without one. But the average hides the useful part. Split the same companies by what they sell and .com share moves across more than 50 points.

Source: BigIdeasDB Stripe Index, 28,000+ owned company domains, snapshot 2026-07-26. Platform subdomains are excluded.

The gradient has a mechanism. Categories at the top are ones where a stranger has to trust you with money, a home visit or a medical record, usually after finding you in a search rather than through a referral. Categories at the bottom sell to technical or professional buyers who evaluate the product rather than the URL. Nonprofits are the sharpest case in the table: .org is the norm there and a .com would actively lose meaning. The rule is your category's convention, not a universal law. There is more on this decision in our guide to choosing a domain name.

430+ companies are taking payments on a subdomain they do not own

A finding from the same dataset that is worth a minute of your time. Roughly 870+ companies in the directory, about 3% of those with a website, are running a real business that accepts real payments on a builder subdomain rather than a domain of their own. Around 430+ of those are on AI app builders specifically, led by vercel.app, lovable.app, base44.app, netlify.app.

It is genuine evidence that you can start charging before you own a domain, and shipping beats naming. It is also a liability nobody tells you about: the address is not yours, you cannot move it, the equity you build in search accrues to somebody else's domain, and if the platform changes terms you have no recourse. A domain costs about the price of lunch. If you are already collecting money, buy one.

When everything you like is taken

This is the normal situation, not bad luck. There are more than 400 million registered domain names, so the good short ones went years ago. Four responses, three of which are fine:

• Lengthen it. Add a real word or make it a compound. This is what most companies did, which is why the median .com is 12 characters.
• Change the extension. Check your category row above first. On .ai and .io the median name is only 8 characters, because short labels are still available there.
• Change the name. Cheapest option you have right now, and it stops being cheap the moment you have links, customers and search history.
• Do not take the hyphenated version of a name somebody else owns. You inherit permanent verbal ambiguity with a competitor, and it is the only choice here whose cost grows as you succeed.

After the name: is the idea worth building?

Naming has a low ceiling on value and no ceiling on time spent, which is exactly the profile of a task that quietly eats a launch. Once the domain is typeable and unambiguous, stop. The harder question is whether anyone wants the thing, and that one is answerable from evidence: over a million documented complaints across Reddit, G2, Capterra and the app stores, plus revenue data on real companies. Name it here, then go check the demand behind it.

Related reading and tools

• How to choose a domain name for a startup
• The best AI domain name generators, tested against real data
• The Stripe Index: companies that actually take payments
• How to validate a startup idea before you build it
• Business Idea Generator
• Business Idea Evaluator
• All free SaaS tools and calculators