Software products
A concise identity for applications, APIs, platforms, and developer-focused services.
Domain registration
Buy a .io Domain
Give your developer tool, software platform, or startup a concise address familiar to technical audiences.
About .io
A country-code domain used across technology
.io is the country-code top-level domain for the British Indian Ocean Territory. It was delegated in 1997 and is managed by Internet Computer Bureau Limited. Second-level registrations are available to applicants from any legal jurisdiction, subject to registry rules.
Startup branding
Useful for short, modern brand names in technology-oriented markets.
Technical projects
A familiar choice for open-source tools, engineering teams, and product documentation.
Registration details
.io pricing and terms
Registration is listed at $40.00 USD for 1 year. Transfer is listed at $40.00 USD for 1 year. Renewal is listed at $40.00 USD for 1 year. Search your exact name and confirm the final total at checkout.
Register
$40.00
Listed for 1 year
Continue to checkoutTransfer
$40.00
Listed for 1 year
Start transferRenew
$40.00
Listed for 1 year
Continue to checkoutPrices are listed in USD. Availability, premium-name charges, taxes, and the final total are confirmed at checkout.
Term: 1 year
Restrictions: Open internationally, with registry use, contact-data, and abuse policies.
Shared domain offer
Launch your .io product site
Use hosting for product pages, documentation, or a developer community. Confirm the hosting plan and any trial eligibility with ARZ Host.
Popular alternatives
Explore other technology-friendly endings
.io FAQs
.io domain questions
Key points about .io classification, registration rules, terms, and transfers.
Is .io a generic domain?
No. It is the country-code top-level domain for the British Indian Ocean Territory, although it is widely used by technology brands.
Can anyone register a second-level .io domain?
The registry states that applicants may reside in any legal jurisdiction, subject to its registration rules and policies.
What is the standard .io term?
The registry terms describe one-year registration and renewal periods. Checkout confirms the term sold by ARZ Host.
Are there special .io use rules?
Yes. Registrants must follow the registry’s acceptable-use, contact-data, spam, dispute, and other policies.
Can I transfer a .io domain?
Transfers are supported through the applicable registry and registrar process. Eligibility and the final transfer price are confirmed at checkout.
Is .io suitable outside technology?
Yes, but its strongest current association is with software, startups, and developer products.