.io domain availability
The startup and developer favorite.
.io reads as 'input/output' to anyone technical, which is why it became the default vibe for startups, SaaS, developer tools and Web3 projects. It feels modern and engineering-native in a way .com doesn't.
Best for
- Startups, SaaS and developer tools
- APIs, infrastructure and Web3 projects
- Anything that wants a 'built by engineers' feel
Frequently asked questions
- Is .io going away because of the Chagos Islands deal?
- Not imminently. The UK–Mauritius treaty raises questions about the long-term status of the country code, but any change would unfold over years with transition arrangements. Millions of .io domains remain in active use.
- Why do so many startups use .io?
- It evokes 'I/O' (input/output), feels technical and modern, and short .io names are often available when the .com is long gone. It became a cultural default in tech.