Hivex

Short domain names for AI startups

About

I make Hivex (hivex.si): a free, live index of short .si names you can still register, a checker for any domain, and a free API with no key. .si reads as super intelligence. .com, .ai and .io are next. Happy to look at your product name and suggest a few that are free.

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.si names

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Gone streaking

Maker History

HivexFind a short domain name for your AI startup
Oct 2026

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Joined Product HuntOctober 5th, 2026

Forums

p/hivexsi

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21h ago

Which extension should Hivex index next?

Hivex indexes short .si names that are still free to register (67,000+ confirmed free today). We want to add one more extension next.

Which would you actually use: .com, .ai or .io?

And what would make a name list more useful to you: length filters, how easy a name is to say, trademark checks, something else?

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17h ago

Hivex - Find a short domain name for your AI startup

Hivex keeps a live index of 540,000+ short .si names nobody has claimed, 67,000+ of them already confirmed free with the registry. .si reads as super intelligence. Filter by what you are building, check any name live in one click, or use the free API. Free, no sign-up: filters for length, style and use case (AI agents, assistants, dev tools, fintech), shareable shortlists, and a JSON API with no key.