Guides for .si domains

Plain-language guides on registering, pointing and managing a .si domain, written for people who build with AI. Every external fact links to its source.

• Registration

  Who can register a .si domain?

  Anyone can register a .si domain: individuals and companies, from any country. What details you need, and what "no local presence" means in practice.

• Choosing a TLD

  .si vs .ai, .io and .com for an AI company

  An honest comparison of .si, .ai, .io and .com for an AI product: what each is, how Google treats country domains, email myths and the trade-offs.

• Background

  What does .si mean? Slovenia and “SI” in AI

  .si is Slovenia's country domain, run by the ARNES registry since 1992. Where the superintelligence shorthand comes from, with sources and caveats.

• Price and renewal

  .si domain price, renewal and expiry

  What a .si domain costs, how renewal works, and what happens when it expires: the registry's quarantine period, restore fees and how not to lose a name.

• DNS and hosting

  How to point a .si domain at Vercel, Netlify, Cloudflare Pages or GitHub Pages

  DNS records to point a .si domain at Vercel, Netlify, Cloudflare Pages or GitHub Pages, from each provider's docs, plus our one-step Cloudflare setup.

• Email

  Set up email on a .si domain

  Get email on your .si domain: the MX, SPF, DKIM and DMARC records explained, with Google Workspace, Microsoft 365 and Cloudflare Email Routing examples.

• AI agents (MCP)

  Manage a .si domain from Claude or Cursor

  Connect Claude Code, Cursor or another MCP client to manage .si domains: create a token, check names, edit DNS. A person always confirms and pays.

• Transfer and sale

  Transferring or selling a .si domain

  How moving a .si domain to another registrar differs from selling it to someone else, what the registry allows, and the checks to make before you start.

Guides in Slovenian for ordinary businesses are at Vodiči.