Updated November 1, 2026

# Free Domain Name Generator: Registry-Checked .com, .ai, .io

Canonical HTML: https://domainsearchking.com/

Availability: this text is an editorial snapshot, not a current registration guarantee. Use the [live domain checker](https://domainsearchking.com/verify) or [MCP](https://domainsearchking.com/mcp) before treating a name as available. Registry errors mean unknown, not available.

Updated November 1, 2026

Enter a keyword or a short description. Names are checked on **.com**, and up to 36 per search on **.ai and .io**. A taken .com stays in the list when .ai or .io is free. Switch off ".com only" to check every name on .ai, .io, .co, .net, and .org. A free name can show Spaceship's price for that ending. Other registrars' prices are not shown.

## How this free domain name generator works

Type a keyword such as "candle", or a sentence about the business such as "late-night coffee roaster that ships beans". A keyword returns two kinds of names: blends that keep your word, like YourCoffeeWorks, and coined names written by AI naming styles. A sentence switches on AI mode, which writes names from the description. Many results are made-up words, and [invented names vs keyword domains](https://domainsearchking.com/invented-names-vs-keyword-domains) explains when that helps and when an exact keyword is worth more.

1.  The engine writes candidate names for your keyword or description.
2.  Each .com is looked up over RDAP, the protocol registries use to publish registration data. Verisign runs the .com and .net registries. A "not found" answer (HTTP 404) means no registration exists; a 200 answer means the name is registered.
3.  A taken .com is hidden unless .ai or .io is free. If a lookup fails or is rate-limited, that extension stays unchecked instead of being called free.
4.  Up to 36 names per search are also checked on .ai and .io. A taken .com stays on the card when one of those is free. Switch off ".com only" to check every name on .ai, .io, .co, .net, and .org.
5.  Clicking a result runs a fresh lookup on the extension shown, right before you decide.

Popular keywords are answered from a cache so the first results load faster. Those names were checked when the cache was written, up to about 30 hours earlier. After showing them, the page rechecks them in the background and removes any that have since been registered. The full list of controls is on the [features page](https://domainsearchking.com/features), and the [Namelix alternative](https://domainsearchking.com/namelix-alternative) page compares this tool with Namelix.

## Example: a "coffee" search on 15 October 2026

On 2026-10-15 the cache entry for "coffee", written at 11:00 UTC, held 18 AI-written names and 63 keyword blends. At 23:24 UTC the same day we looked up the 18 AI names again on Verisign's .com RDAP server (rdap.verisign.com). All 18 still returned 404. The obvious dictionary names returned 200:

| Name | Kind | RDAP answer, 2026-10-15 23:24 UTC |
| --- | --- | --- |
| coffee.com | Exact keyword | 200, registered |
| coffeeshop.com | Keyword + noun | 200, registered |
| coffeehouse.com | Keyword + noun | 200, registered |
| brewhouse.com | Related word | 200, registered |
| emberoast.com | AI-written | 404, not found |
| tidebrew.com | AI-written | 404, not found |
| roastvine.com | AI-written | 404, not found |
| duskbean.com | AI-written | 404, not found |
| mochasong.com | AI-written | 404, not found |

Short dictionary .coms for common trades were registered years ago, which is why the useful results for a word like "coffee" are blends and coined names. Not every coined name is a good one: coffese and coffara, also in that batch, sit close enough to "coffee" that people may mistype them. This was one keyword rechecked once, 12 hours after caching, so read it as an illustration of the process and not as a success rate.

## Why AI chat tools suggest taken names

A chat model does not query the registry unless it is given a lookup tool, so a name that sounds unclaimed may have been registered for years. For the [AI Domain Hallucination Index](https://domainsearchking.com/ai-hallucination-index) we asked 10 models for available .com names in a run on 2026-09-01 and checked all 2,449 picks over RDAP. 30.5% were available and 69.5% were already taken. Results by model:

| Model | Picks checked | Available |
| --- | --- | --- |
| claude-sonnet-5 | 287 | 50.5% |
| claude-opus-4.8 | 287 | 46.0% |
| gpt-5.6-luna | 288 | 38.2% |
| deepseek-v4-pro | 291 | 32.6% |
| gemini-2.5-pro (small sample) | 41 | 31.7% |
| mistral-nemo | 168 | 31.0% |
| gemini-3-flash-preview | 288 | 22.9% |
| hermes-3-llama-3.1-70b | 247 | 21.9% |
| llama-3.1-8b-instruct | 270 | 21.1% |
| claude-haiku-4.5 | 282 | 8.2% |

Even the best model in that run handed back a taken name about half the time. Our MCP server uses the same naming engine as this page and checks names before returning them; in a June 2026 test, 75 of 76 names it returned (98.7%) were still available on recheck. That test measured MCP output only, and this page has not been tested separately. If a chatbot already gave you a list, [checking AI-suggested names](https://domainsearchking.com/ai-suggested-domain-taken) shows how to run them through the registry.

On 2026-11-01 we asked four newer Claude models for 12 available .com names in each of 24 business types and checked all 1,152 picks on Verisign's RDAP service: 47.1% were available and 52.9% were already taken.

| Model | Picks checked | Available |
| --- | --- | --- |
| claude-opus-5-5 | 288 | 79.2% |
| claude-fable-5-1 | 288 | 57.3% |
| claude-sonnet-5-5 | 288 | 34.4% |
| claude-haiku-5-5 | 288 | 17.7% |

Opus 5.5 led at 79.2%, and 60 of its 288 picks were still taken. A free name can still be a weak one: 85% of its names ended in one of 12 four-letter endings, as in roastlyne.com and steamorra.com. Each model answered as a Claude Code agent told to answer from its own knowledge with no lookups (its session log shows none), covering all 24 types in one session, while September's models answered through the API with one call per type, so the two tables are kept apart. None of these models checked a name before suggesting it; the MCP server runs an RDAP check on each name before returning it.

## What "available" means on this page

An available result means the registry had no record of the name when it was checked. Three limits apply. First, the check is a snapshot and reserves nothing, so someone else can register the name a minute later; click the result to recheck it just before you buy. Second, a registrar can still refuse or reprice a name. Verisign charges registrars one wholesale fee for every new .com, so an unregistered .com normally sells at the registrar's standard rate (first-year promotions and renewal prices still vary by registrar), but some other extensions put premium prices on unregistered names, and a few names are reserved and cannot be registered at all. The price at checkout is the final answer. Third, availability says nothing about trademarks, so run a [domain trademark check](https://domainsearchking.com/domain-trademark-check) before you build a brand on a name.

RDAP is the lookup the registries themselves publish. Since 28 January 2025, ICANN has named RDAP the definitive source for generic top-level domain registration data in place of WHOIS ([ICANN announcement](https://www.icann.org/en/announcements/details/icann-update-launching-rdap-sunsetting-whois-27-01-2025-en), fetched 15 October 2026), which is why this tool reads RDAP and not WHOIS. You can run the same lookup by hand; [how to check if a domain name is taken](https://domainsearchking.com/how-to-check-if-a-domain-name-is-taken) walks through it.

## How do I pick a name from the list?

1.  Say the name to someone and ask them to type it. If they misspell it, people who hear it will land elsewhere.
2.  Sort by Shortest. Shorter names are easier to say, type and fit on a logo.
3.  Use Starts with, Contains or Ends with to keep your keyword in a fixed position.
4.  Save candidates with the heart, then click each one to recheck it before buying.
5.  Compare renewal prices as well as the first-year price. Register links are affiliate links, so check prices on your own too.

The [cheapest .com registrar comparison](https://domainsearchking.com/cheapest-com-domain-registrar) lists first-year and renewal prices side by side. If the .com you wanted is gone, read [.net vs .com](https://domainsearchking.com/net-vs-com) and [.io vs .com](https://domainsearchking.com/io-vs-com) before settling for another extension, or try the [options for a taken domain](https://domainsearchking.com/domain-taken). For naming rules beyond this list, see [how to choose a domain name](https://domainsearchking.com/how-to-choose-a-domain-name).

## The same checks for AI agents

The [Domain Search King MCP server](https://domainsearchking.com/mcp) exposes the naming and RDAP checks as tools, so an assistant such as Claude can propose names that were looked up before it shows them. Without an account, the server allows 10 tool calls per IP address per day. To look up a single name yourself, use [verify a domain](https://domainsearchking.com/verify); for calls from your own code, see the [domain availability API](https://domainsearchking.com/domain-availability-api).

## Free domain name generator FAQs

### What is Domain Search King?

A free domain name generator that looks up every suggested .com against the registry before showing it, so the list holds names the registry reported as unregistered at check time.

### Is this domain name generator free?

Yes, with no signup. AI naming is capped at 100 requests per IP address per day, and one search uses about 5, so the cap allows roughly 20 searches a day. Rechecking a result by clicking it uses a separate lookup endpoint and does not count toward the cap.

### How does the free generator check availability?

Every suggested name is checked against the registry via RDAP before it is shown, and names reported as taken are filtered out. For popular keywords, the first results can come from a check made up to about 30 hours earlier; the page rechecks those names in the background and drops any now reported as taken.

### How is this different from ChatGPT or other AI name generators?

Chat models write names from patterns in their training data and, without a lookup tool, never ask the registry. This page asks the registry about each name before you see it. Per-model results are in the table above and in the [AI Domain Hallucination Index](https://domainsearchking.com/ai-hallucination-index).

### Can a name shown as available be gone when I try to buy it?

Yes. A lookup is a snapshot, and anyone can register the name after it. Cached results can be up to about 30 hours old before the background recheck runs. Click the name to run a fresh lookup just before you open the registrar.

### Does it check .ai and .io?

Every search checks names on .com, and up to 36 of them on .ai and .io. A taken .com stays on the card when .ai or .io is free. A registry can hold back .ai and .io names, so they show as free only after a WHOIS check also says free. If that check gets no answer, the name shows "check", never free. Switch off ".com only" to check every name on .ai, .io, .co, .net, and .org. A free name can show Spaceship's price for that ending, from Spaceship's API. A premium name can cost more. Other registrars' prices are not shown.

### What if my favorite name is already taken?

Search again with a one-sentence description instead of a single keyword; AI mode writes a different set of names from it. If you are attached to the exact name, [7 ways to work around a taken name](https://domainsearchking.com/domain-taken) covers prefixes, other extensions and buying from the current owner.

## Related tools & guides

[AI agency names](https://domainsearchking.com/ai-agency-name-generator) [Shopify domain generator](https://domainsearchking.com/shopify-name-generator) [AI taken rescue](https://domainsearchking.com/ai-suggested-domain-taken) [Hallucination index](https://domainsearchking.com/ai-hallucination-index) [AI domain generator](https://domainsearchking.com/ai-domain-name-generator) [AI business names](https://domainsearchking.com/ai-business-name-generator) [Namelix alternative](https://domainsearchking.com/namelix-alternative) [Domain taken?](https://domainsearchking.com/domain-taken) [Verify a domain](https://domainsearchking.com/verify) [Catchy domain name ideas](https://domainsearchking.com/catchy-domain-name-ideas) [Available one-word .coms](https://domainsearchking.com/available-one-word-domains) [Invented vs keyword names](https://domainsearchking.com/invented-names-vs-keyword-domains) [Auto repair names](https://domainsearchking.com/auto-repair-business-names) [How to choose a domain name](https://domainsearchking.com/how-to-choose-a-domain-name) [How to check if a domain is taken](https://domainsearchking.com/how-to-check-if-a-domain-name-is-taken) [MCP for agents](https://domainsearchking.com/mcp) [Niche ideas](https://domainsearchking.com/ideas) [Features](https://domainsearchking.com/features) [About](https://domainsearchking.com/about) [Shopify name taken?](https://domainsearchking.com/is-shopify-store-name-taken)