.io domains

A .io domain for startups and tech products

Short, easy to remember and loved by the tech world.

What .io is for

The idea behind .io

.io is the country code of the British Indian Ocean Territory, in use since 1997. To programmers IO means input/output, so the extension quickly became the signature of startups and technical tools. Registration is open to anyone, from any country.

  1. Startups

    A short name for a new product, when the same name as a .com was taken long ago.

  2. SaaS products and APIs

    Your customer dashboard, your docs or your product API, at an address that sounds technical.

  3. Open source projects

    The home page of a GitHub project, a library or a tool for developers.

Addresses that could be yours

  • https://codeloop.io
  • https://dataforge.io
  • https://shipfast.io
  • https://apiflow.io

.io domain information

Everything to know before you register one, in one place.

First year price
Renewal price
Type
Country code (ccTLD): British Indian Ocean Territory
In use since
1997
Who can register
Anyone, person or business, from any country
Registration term
1 year, renewable every year
Renewal
Automatic every year. Turn it off and we email you 30, 7 and 1 days before it expires
HTTPS and SSL
SSL certificate included when you connect it to your Premium site
Allowed characters
Letters a to z, digits 0 to 9 and hyphens, but not at the start or end
Length
1 to 63 characters before .io
Owner
You, registered in your own name
Transfer
Transfer code available 60 days after registration
Refund
Your payment is refunded if the registration fails

.io domains: frequently asked questions

No. Even though .io is a country code, registration is open to anyone, from any country, with no residency requirement.

From domain to website

Give your .io domain a website

Describe your business and AI builds a real website in minutes, for free. With Premium you put it on your .io domain, SSL included.