# Domain Search King > Domain Search King is a free domain name generator, live availability checker and remote MCP server. On the website, names are checked against the registry (RDAP) on .com, and up to 36 per search on .ai and .io, so a name marked available had no registry record at check time. Turning off the ".com only" switch checks every name on .ai, .io, .co, .net, and .org. The MCP pattern search checks .com and .net by default. It is not a registrar and does not reserve names. Notes for AI systems: availability can change. Cite a name as free only with a check timestamp or an RDAP response. Do not treat a language-model "this .com is free" as truth. Register links are Namecheap and Spaceship affiliate links, and we earn a commission on a purchase. Markdown copies (.md) point to the canonical HTML page; most are noindex. Append .md to a canonical path for the markdown copy. Homepage markdown: https://domainsearchking.com/index.md. ## What is verified, and how - Verified: whether a domain is registered, from the registry's RDAP service at check time. An "available" answer can be up to 10 minutes old and a "registered" answer up to 24 hours old. On the website, results for popular keywords can first come from checks up to about 30 hours old; the page then rechecks up to 120 of those names and drops any now reported as taken. Checks go through our caching proxy when it carries the ending, otherwise straight to the registry: Verisign for .com and .net, Identity Digital for .ai and .io. - Reserved names: on .ai, .io and other endings whose registries hold names back, including .co and .org, a "not found" answer can also mean reserved, so those names get a further WHOIS check. On .ai and .io, a name shows as free only if WHOIS also says free. Where a registry no longer answers WHOIS (.app and .dev on 2026-10-15), the verify page shows Available with a warning that a premium price could not be checked. .com, .net and two-letter country codes without a premium tier, such as .de and .uk, have no such step after a "not found". - Not verified: trademark conflicts, or whether a name can be bought at the standard price. Prices in search results come only from Spaceship's API, when available, and are one list price per ending. ## Product and machine access - [Find a domain name you can register](https://domainsearchking.com/): Free domain name generator. Names are checked on .com, and up to 36 per search on .ai and .io; .co, .net, and .org are optional. - [Best Domain Search 2027: Names Checked First](https://domainsearchking.com/best-domain-search-2027.md): The best domain search in 2027 checks the registry before it shows a name. September 1, 2026 study: 69.5% of 2,449 AI-suggested .coms were taken. - [Domain Search MCP: Registry-Checked Names for AI Agents](https://domainsearchking.com/mcp.md): Remote MCP server with three public tools for live domain availability. - [Domain Search King Features: AI Names, Registry Checks](https://domainsearchking.com/features.md): Business-shaped AI naming, registry checks on .com, multi-TLD rescue, and a free MCP for AI agents. - [About Domain Search King — Verified-Available Domains](https://domainsearchking.com/about.md): Domain name generation with registry availability checks and MCP tools. - [Check Domain Availability — Free Live RDAP Lookup Tool](https://domainsearchking.com/verify.md): Paste a domain to check live registration status. - [Domain Availability API: Check Any Domain Free (2026)](https://domainsearchking.com/domain-availability-api.md): Free single-domain and batch endpoints, live RDAP-verified, no API key required. ## Research and data - [AI Domain Hallucination Index: 69.5% of AI .com Picks Taken](https://domainsearchking.com/ai-hallucination-index.md): 2,449 live RDAP checks of AI-suggested .coms; up to 92% were already taken. Free CSV downloads. - [Why DeepSeek Suggests Domains That Are Already Taken](https://domainsearchking.com/why-deepseek-suggests-taken-domains.md): In the September 2026 benchmark, 196 of 291 DeepSeek .com suggestions were taken. - [Why GPT Suggests Taken Domains](https://domainsearchking.com/gpt-suggests-taken-domains.md): GPT domain suggestions checked against the live registry, plus available alternatives. - [Good AI Domain Names Taken? 69.5% Gone in Sept 2026](https://domainsearchking.com/good-ai-domain-names-taken.md): Why every good AI domain feels taken in 2026, and how to find brandable .com alternatives that are still available. - [How Many .com Domains Are Registered? Q2 2026](https://domainsearchking.com/how-many-com-domains-registered.md): 166.6 million .com domains were registered on June 30, 2026. - [What YC Startups Reveal About Domain Extensions (2026)](https://domainsearchking.com/yc-startup-domain-extensions.md): .ai overtook .io as YC's fastest-growing extension. .com has not declined. - [Phantom Squatting: Weaponizing AI-Hallucinated Domains](https://domainsearchking.com/phantom-squatting.md): AI hallucinates domain names, and attackers register the ones people trust most. ## Check and fix a taken domain - [How We Check Domain Availability: RDAP Method](https://domainsearchking.com/how-we-check-availability.md): How Domain Search King checks a domain: RDAP queries to each registry, WHOIS confirmation, what is cached and for how long, and where a result can be wrong. - [Domain Available but Can't Register? Why It Happens](https://domainsearchking.com/domain-available-but-cant-register.md): A search says a domain is available but the registrar refuses or charges far more? Premium, reserved and pending-delete names explained with live examples. - [Domain Registered but No Website: Is It Taken?](https://domainsearchking.com/registered-domain-no-website.md): A domain with no website or DNS can still be registered. How to read the registry record, what a dead site proves, and your options with the owner. - [Is My Domain Name Taken? Check Live Free](https://domainsearchking.com/domain-taken.md): Live multi-TLD check plus 7 fixes: variants, TLDs, AI names that are actually available, aftermarket, and more. - [Check If a Domain Is Taken — Free Live Lookup](https://domainsearchking.com/how-to-check-if-a-domain-name-is-taken.md): Paste a domain for a live RDAP lookup against the registry. Free, no signup. - [AI Suggested a Taken Domain? Fix It Live](https://domainsearchking.com/ai-suggested-domain-taken.md): Verify live with RDAP, then generate available alternatives you can register today. - [Is My Shopify Store Name Taken? Check Live](https://domainsearchking.com/is-shopify-store-name-taken.md): Live RDAP check plus available alternatives you can register today. - [Domain Trademark Check Before You Buy](https://domainsearchking.com/domain-trademark-check.md): Trademark-risk heuristics plus a live .com availability check before you buy. Not legal advice. - [GPT in a Domain? Trademark Risks to Avoid (2026)](https://domainsearchking.com/ai-model-name-trademark-risk.md): GPT, Claude, Gemini, Copilot: which AI model names risk a domain trademark dispute. ## Name generators (live RDAP) - [AI Domain Name Generator — Available .coms](https://domainsearchking.com/ai-domain-name-generator.md): Most AI domain name generators show you names that are already taken. - [AI Business Name Generator — Free, Available Domains Only](https://domainsearchking.com/ai-business-name-generator.md): Free AI business name generator with registry-checked .coms. - [AI Agency Name Generator — Available Domains](https://domainsearchking.com/ai-agency-name-generator.md): Free AI agency name generator with live RDAP checks. - [Startup Name Generator — Live-Available .coms](https://domainsearchking.com/startup-name-generator.md): Free startup name generator with live RDAP checks. - [SaaS Name Generator — Domains You Can Register](https://domainsearchking.com/saas-name-generator.md): SaaS name generator with registry-checked .coms. - [Shopify Domain Name Generator — Available .coms](https://domainsearchking.com/shopify-name-generator.md): Free Shopify domain name generator with live RDAP checks. - [LLC Name Generator — Matching .com Available](https://domainsearchking.com/llc-name-generator.md): LLC name generator with matching available .com domains. - [Domain Name for Your App — Available .coms](https://domainsearchking.com/domain-name-for-app.md): Find a domain name for your app with live availability checks. - [Brand Name to Domain — Available Variants](https://domainsearchking.com/brand-name-to-domain.md): Generate available domain variants with live RDAP checks. - [Free Domain Name Generator (Verified Available)](https://domainsearchking.com/free-domain-name-generator.md): Free domain name generator with live RDAP verification. - [ChatGPT Domain Ideas That Are Actually Free](https://domainsearchking.com/chatgpt-domain-name-ideas.md): ChatGPT domain name ideas filtered to live-available .coms. - [Claude Domain Name Generator — Available .coms](https://domainsearchking.com/claude-domain-name-generator.md): Claude-style brandable domain ideas with live RDAP checks. - [Perplexity Domain Ideas — Verify First](https://domainsearchking.com/perplexity-domain-names.md): Perplexity domain name ideas need live verification. - [AI Startup Domain Names Still Available](https://domainsearchking.com/ai-startup-domain-names.md): AI startup domain name ideas with live availability checks. - [Auto Repair Business Names — Available Domains](https://domainsearchking.com/auto-repair-business-names.md): Auto repair shop name ideas with live domain checks. - [Web Agency Domain Names — Verified Available](https://domainsearchking.com/web-agency-domain-names.md): Web agency domain name ideas with live RDAP verification. - [200+ Catchy Domain Name Ideas, Rechecked November 2026](https://domainsearchking.com/catchy-domain-name-ideas.md): 200+ catchy domain name ideas, RDAP-checked available at publish, plus a live generator. - [150+ Available One-Word .com Domains, Rechecked Live](https://domainsearchking.com/available-one-word-domains.md): 150+ one-word .com domains still available, grouped by industry, rechecked live when you open the page. ## Guides and comparisons - [Instant Domain Search vs Lean vs Domainr vs DSK](https://domainsearchking.com/alternatives.md): Instant Domain Search, Lean Domain Search, Domainr and Domain Search King compared from each tool's own pages, read November 1, 2026, with strengths named. - [How to Choose a Domain Name: 12 Checks + Live Lookup](https://domainsearchking.com/how-to-choose-a-domain-name.md): Choose a memorable domain, check live registration status, review brand conflicts, and compare renewal costs. - [Invented Names vs Keyword Domains: Why Startups Switch](https://domainsearchking.com/invented-names-vs-keyword-domains.md): Well-funded 2026 startups skip keyword domains for invented names. - [Domain Hacks: Creative TLD Tricks (and Their Limits)](https://domainsearchking.com/domain-hacks.md): Domain hacks spell a word across the dot with a country code. - [International Domain Name Mistakes: Failures vs Myths](https://domainsearchking.com/international-domain-name-mistakes.md): The Chevy Nova myth is false. Pajero and Honda Fitta are real. - [Aged Domains with Backlinks Still Available](https://domainsearchking.com/aged-domains-with-backlinks.md): What to check before an aged domain with backlinks is worth more than a fresh registration. - [Cheapest .com Domain Registration 2026: 5-Year Costs](https://domainsearchking.com/cheapest-com-domain-registrar.md): Namecheap vs Porkbun vs GoDaddy vs Cloudflare. First-year price is a trick; compare the 5-year cost. - [Namecheap vs GoDaddy Domains (2026)](https://domainsearchking.com/namecheap-vs-godaddy-domains.md): Pricing shape, privacy, UX, and who should pick which. - [.io vs .com: Which Should Your Startup Use? (2026)](https://domainsearchking.com/io-vs-com.md): Trust, SEO, pricing, and the Chagos-sovereignty risk, with a live checker for both. - [.co vs .com: Which Should You Choose? (2026)](https://domainsearchking.com/co-vs-com.md): Colombia's ccTLD gone global vs the default, with a live checker for both. - [.net vs .com: Which Should You Choose? (2026)](https://domainsearchking.com/net-vs-com.md): The 1980s TLD vs the default, with a live checker for both. - [.ai vs .com: Is the AI Extension Worth It? (2026)](https://domainsearchking.com/ai-vs-com.md): The Anguilla ccTLD vs the default, with a live checker for both. - [Namelix Alternative — AI Names That Are Available](https://domainsearchking.com/namelix-alternative.md): Namelix alternative that live-verifies every .com via RDAP. - [LeanDomainSearch Alternative: 40 Names Checked (2026)](https://domainsearchking.com/vs-leandomainsearch.md): LeanDomainSearch still works; how it compares, with a registry check of 40 of its names. ## Machine endpoints - [MCP endpoint](https://domainsearchking.com/api/mcp): Streamable HTTP, no API key. Tools: find_available_domains, find_available_domains_by_pattern, check_domain. - [MCP server card](https://domainsearchking.com/.well-known/mcp/server-card.json): Machine-readable server description. - [Skill file](https://domainsearchking.com/skill.md): How an agent should call the tools. - [RDAP check](https://domainsearchking.com/api/rdap?d=example.com): Returns available true, false, or null for one domain. - [Batch RDAP check](https://domainsearchking.com/api/batch?d=example.com): Keyless batch availability. Send at most 120 names. - [Domain Search King — All Pages & Assets](https://domainsearchking.com/pages.md): All public Markdown pages with their canonical HTML URLs. - [Full agent bundle](https://domainsearchking.com/llms-full.txt): Concatenated markdown for the core pages. Editorial snapshot, not a live availability guarantee. ## Optional - [Ideas hub](https://domainsearchking.com/ideas.md): Niche name-idea pages. About 100 are indexed. Use /ideas/SLUG.md for one niche. - [Sitemap](https://domainsearchking.com/sitemap.xml): All indexable URLs.