.io
Country CodeOriginally the country code for the British Indian Ocean Territory, .io has been adopted by the tech world as its de facto domain. Why? Because "I/O" stands for Input/Output, and tech people love a good pun.
If you're building a SaaS product, a developer tool, or basically anything with an API, .io is the cool kid's choice. It's like wearing a hoodie and sneakers to a board meeting — it says "we're serious about what we do, but not about how we look."
Fun fact: the British Indian Ocean Territory has a population of roughly zero permanent residents. Yet its TLD is one of the most popular in the world. The internet is nothing if not ironic.
Domains We Love
- •github.io — Every developer's first website lives here. It's like a digital treehouse.
- •socket.io — Real-time, bidirectional event-based communication. It just works.
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.io Technical Details
ccTLD · Technology
whois.nic.io