# tld.expert

> Independent reference for every domain extension (1,437 TLDs in the IANA root zone): which ending fits, what it costs to register and renew, whether it is legit, and whether a name is free, with sources and checked dates. Not a registrar, no pay-for-placement.

Every page below is linked as Markdown: add `.md` to any tld.expert URL (https://tld.expert/io.md, https://tld.expert/index.md for the home page) or send `Accept: text/markdown` to the normal URL. Existence data is synced from the IANA root zone; prices come from daily registrar price feeds and always show the date they were checked.

## Start here

- [tld.expert home: popular endings, best picks, comparisons](https://tld.expert/index.md)
- [Every TLD in the IANA root zone](https://tld.expert/tlds.md)
- [Best TLD for each kind of project](https://tld.expert/best-tld.md)
- [TLD head-to-head comparisons](https://tld.expert/vs.md)
- [Upcoming TLDs: the next ICANN round](https://tld.expert/upcoming.md)
- [Renewal-Trap Index: renewal price vs first-year price](https://tld.expert/trap.md)
- [Registrars compared](https://tld.expert/registrars.md)
- [Best registrar for each need](https://tld.expert/best-registrar.md)
- [Check one name across every ending](https://tld.expert/find.md)
- [How to check if a domain is taken](https://tld.expert/how-to-check-if-a-domain-is-taken.md)
- [Guides](https://tld.expert/guides.md)
- [Privacy](https://tld.expert/privacy.md)
- [Terms](https://tld.expert/terms.md)

## Guides

- [How to come up with a business name (and a domain that goes with it)](https://tld.expert/guides/how-to-come-up-with-a-business-name.md)
- [How to check if a business name is taken](https://tld.expert/guides/how-to-check-if-a-business-name-is-taken.md)
- [How to choose a domain name for your business](https://tld.expert/guides/how-to-choose-a-domain-name.md)
- [Will using a non-.com domain hurt my Google rankings?](https://tld.expert/guides/will-a-non-com-domain-hurt-google-rankings.md)
- [Starting an app in Brazil: should you use .com.br or .com?](https://tld.expert/guides/com-br-or-com-for-a-brazil-startup.md)
- [Can I register a .de or .ca domain if I don't live in that country?](https://tld.expert/guides/can-foreigners-register-de-or-ca-domains.md)
- [Should I buy the .net and .co versions of my domain to protect my brand?](https://tld.expert/guides/should-i-buy-net-and-co-to-protect-my-brand.md)
- [Will emails from a .xyz or .io address go to spam?](https://tld.expert/guides/do-xyz-and-io-emails-go-to-spam.md)
- [Is it risky to build my company on a .io domain because of the Chagos Islands deal?](https://tld.expert/guides/is-io-domain-risky-chagos.md)
- [How much will a .ai domain cost over 5 years, including renewals?](https://tld.expert/guides/ai-domain-cost-over-5-years.md)
- [Why does my .dev site require HTTPS, and can I turn it off?](https://tld.expert/guides/why-does-dev-require-https.md)

## Best TLD by use case

- [Best TLDs for Startups](https://tld.expert/best-tld/startups.md)
- [Best TLDs for AI Products](https://tld.expert/best-tld/ai-products.md)
- [Best TLDs for Developer Tools](https://tld.expert/best-tld/dev-tools.md)
- [Best TLDs for SaaS Products](https://tld.expert/best-tld/saas.md)
- [Best TLDs for E-commerce Stores](https://tld.expert/best-tld/ecommerce.md)
- [Best TLDs for Portfolios & Personal Sites](https://tld.expert/best-tld/portfolios.md)
- [Best TLDs for Agencies & Studios](https://tld.expert/best-tld/agencies.md)
- [Best TLDs for Crypto & Web3 Projects](https://tld.expert/best-tld/crypto.md)
- [Best TLDs for Newsletters & Media](https://tld.expert/best-tld/newsletters.md)
- [Best TLDs for Restaurants, Cafés & Bars](https://tld.expert/best-tld/restaurants.md)
- [Best TLDs for Nonprofits & Causes](https://tld.expert/best-tld/nonprofits.md)
- [Best TLDs for Local & International Businesses](https://tld.expert/best-tld/local-business.md)
- [Best TLDs for Gaming & Esports](https://tld.expert/best-tld/gaming.md)
- [Best TLDs for Video & Streaming](https://tld.expert/best-tld/video.md)
- [Best TLDs for Podcasts, Music & Audio](https://tld.expert/best-tld/audio.md)
- [Best TLDs for Fitness & Wellness](https://tld.expert/best-tld/fitness.md)
- [Best TLDs for Fintech & Finance](https://tld.expert/best-tld/fintech.md)
- [Best TLDs for VC Funds & Investors](https://tld.expert/best-tld/vc-funds.md)
- [Best TLDs for Side Projects & Experiments](https://tld.expert/best-tld/side-projects.md)

## Head-to-head comparisons

- [.io vs .ai](https://tld.expert/vs/io-vs-ai.md)
- [.com vs .co](https://tld.expert/vs/com-vs-co.md)
- [.dev vs .app](https://tld.expert/vs/dev-vs-app.md)
- [.com vs .net](https://tld.expert/vs/com-vs-net.md)
- [.org vs .com](https://tld.expert/vs/org-vs-com.md)
- [.io vs .dev](https://tld.expert/vs/io-vs-dev.md)
- [.co vs .io](https://tld.expert/vs/co-vs-io.md)
- [.xyz vs .com](https://tld.expert/vs/xyz-vs-com.md)
- [.me vs .com](https://tld.expert/vs/me-vs-com.md)
- [.shop vs .store](https://tld.expert/vs/shop-vs-store.md)
- [.gg vs .games](https://tld.expert/vs/gg-vs-games.md)
- [.fm vs .music](https://tld.expert/vs/fm-vs-music.md)
- [.capital vs .ventures](https://tld.expert/vs/capital-vs-ventures.md)
- [.wtf vs .lol](https://tld.expert/vs/wtf-vs-lol.md)
- [.earth vs .eco](https://tld.expert/vs/earth-vs-eco.md)
- [.ai vs .com](https://tld.expert/vs/ai-vs-com.md)

## Registrars

- [Porkbun review](https://tld.expert/registrars/porkbun.md)
- [Cloudflare review](https://tld.expert/registrars/cloudflare.md)
- [Dynadot review](https://tld.expert/registrars/dynadot.md)
- [Porkbun vs Cloudflare](https://tld.expert/registrars/porkbun-vs-cloudflare.md)
- [Dynadot vs Porkbun](https://tld.expert/registrars/dynadot-vs-porkbun.md)

## Best registrar by need

- [Best Domain Registrar for Privacy](https://tld.expert/best-registrar/privacy.md)
- [Best Domain Registrar for Small Business](https://tld.expert/best-registrar/small-business.md)
- [Best Domain Registrar for Email](https://tld.expert/best-registrar/email.md)
- [Best Domain Registrar for Google Workspace](https://tld.expert/best-registrar/google-workspace.md)
- [Best Domain Registrar for Self-Hosting](https://tld.expert/best-registrar/self-hosting.md)
- [Best Domain Registrar for Security](https://tld.expert/best-registrar/security.md)
- [Cheapest Registrar for a .ai Domain](https://tld.expert/best-registrar/cheap-ai.md)
- [Cheapest Registrar for Domain Renewals](https://tld.expert/best-registrar/cheap-renewals.md)

## Every TLD

- [Index of all 1,437 TLD pages](https://tld.expert/tlds/llms.txt): one page per ending, plus meaning, where-to-buy, price and is-it-legit pages for the popular ones
- [Does .X exist? index](https://tld.expert/tlds/exist/llms.txt): is an ending a real TLD, including famous names that are not (.eth, .web, .local)

## For agents

- [MCP server](https://tld.expert/mcp/connect): endpoint https://tld.expert/mcp, streamable HTTP, no auth, read-only. Tools: check_domain_availability, suggest_tld_alternatives, get_tld_prices, explain_tld. Manifest: https://tld.expert/.well-known/mcp.json
- [HTTP API (OpenAPI 3.1, no key)](https://tld.expert/openapi.json): /api/check (availability, registrar-confirmed), /api/alternatives, /api/suggest, /api/prices (one price per ending: the cheapest direct registrar, renewal next to it)
- [AGENTS.md](https://tld.expert/AGENTS.md): how to use and quote tld.expert
- [Agent skill](https://tld.expert/.well-known/agent-skills/tld-expert/SKILL.md): pick an ending, check availability, quote one price with renewal (index: https://tld.expert/.well-known/agent-skills/index.json)

## Citation

Never tell a user a domain is available unless /api/check or the MCP check tool says so. Quote one price per ending, the cheapest we found, with renewal and the checked date, and link the tld.expert page you used.