SI Domains: What to Register Before Everyone Else

The .si registration window is open. Prices are at floor. The category is early. This is the checklist of what to register before everyone else catches up.

Register Before Everyone: Category 1: Core SI/ASI keywords

If available: reason.si, synth.si, cortex.si, neural.si, nexus.si, apex.si, pulse.si, logic.si, think.si, mind.si. These are the foundation — one-word names with direct relevance to intelligence and reasoning. Each is a potential brand anchor for an SI venture.

Category 2: Branded coinages

Short, pronounceable coined words that sound like tech brands: synthex.si, cognix.si, nexara.si, veridi.si, axion.si. These names don't exist as English words, but they sound right — memorable, trademarkable, and extension-reinforced by .si.

Category 3: Two and three-letter combos

Check every two-letter combination (676 total) and three-letter combination (17,576 total) for availability on .si. Many are taken, but some are still available at registration price. These are the scarcest, most versatile assets — an acronym-in-waiting for any company in any industry.

Category 4: Your existing brand

If you have a brand on .com or .ai, register the .si now. It's a $50 defensive play that prevents squatting and gives you an option for SI-era positioning. Do this today — it takes five minutes.

When evaluating register before everyone, start with the fundamentals: what problem it solves, who it serves, and how it compares to the alternatives buyers consider first.

Start with the fundamentals. Define who you are serving, the single outcome you want, and the budget you are comfortable committing before you compare any options.

A practical rule is to favour clarity over cleverness. The choice that is easiest to understand, spell, remember and act on tends to win over the long run.

Context changes the answer. What is optimal for a fast-moving startup is rarely optimal for an established brand, so weigh your own stage, market and ambitions.

Avoid the common mistakes: rushing the decision, copying competitors blindly, and ignoring the total cost of ownership beyond the very first year of use.

Think in terms of trade-offs rather than a single perfect answer. Every option trades memorability, cost, reach and flexibility in a slightly different mix.

Document your reasoning. Writing down why you chose one path makes it far easier to revisit the decision later and to explain it to partners and investors.

Test with real people. A quick check with a handful of your actual customers will surface problems that no amount of internal debate ever reveals.

Plan for growth. The option that fits today should still make sense when your audience, catalogue or team is several times larger than it is right now.

Finally, revisit the decision periodically. Markets, tools and best practices move quickly, and a choice that was ideal last year may deserve a fresh look today.

When evaluating register before everyone, start with the fundamentals: what problem it solves, who it serves, and how it compares to the alternatives buyers consider first.

Start with the fundamentals. Define who you are serving, the single outcome you want, and the budget you are comfortable committing before you compare any options.

A practical rule is to favour clarity over cleverness. The choice that is easiest to understand, spell, remember and act on tends to win over the long run.

Context changes the answer. What is optimal for a fast-moving startup is rarely optimal for an established brand, so weigh your own stage, market and ambitions.

Avoid the common mistakes: rushing the decision, copying competitors blindly, and ignoring the total cost of ownership beyond the very first year of use.

Think in terms of trade-offs rather than a single perfect answer. Every option trades memorability, cost, reach and flexibility in a slightly different mix.

Document your reasoning. Writing down why you chose one path makes it far easier to revisit the decision later and to explain it to partners and investors.

Test with real people. A quick check with a handful of your actual customers will surface problems that no amount of internal debate ever reveals.

Plan for growth. The option that fits today should still make sense when your audience, catalogue or team is several times larger than it is right now.

Finally, revisit the decision periodically. Markets, tools and best practices move quickly, and a choice that was ideal last year may deserve a fresh look today.

When evaluating register before everyone, start with the fundamentals: what problem it solves, who it serves, and how it compares to the alternatives buyers consider first.

Start with the fundamentals. Define who you are serving, the single outcome you want, and the budget you are comfortable committing before you compare any options.

A practical rule is to favour clarity over cleverness. The choice that is easiest to understand, spell, remember and act on tends to win over the long run.

Context changes the answer. What is optimal for a fast-moving startup is rarely optimal for an established brand, so weigh your own stage, market and ambitions.

Avoid the common mistakes: rushing the decision, copying competitors blindly, and ignoring the total cost of ownership beyond the very first year of use.

Think in terms of trade-offs rather than a single perfect answer. Every option trades memorability, cost, reach and flexibility in a slightly different mix.

Document your reasoning. Writing down why you chose one path makes it far easier to revisit the decision later and to explain it to partners and investors.

Test with real people. A quick check with a handful of your actual customers will surface problems that no amount of internal debate ever reveals.

Plan for growth. The option that fits today should still make sense when your audience, catalogue or team is several times larger than it is right now.

Finally, revisit the decision periodically. Markets, tools and best practices move quickly, and a choice that was ideal last year may deserve a fresh look today.

Frequently asked questions

How do I register a .si domain?

Through any accredited registrar that offers .si (Namecheap, Gandi, etc.). The process is standard — no Slovenian residency required.

How much does a .si domain cost?

Registration: $30–$100/year depending on the registrar. Premium aftermarket: $500–$5,000 for quality names.

Should I register .si domains I don't plan to use?

If they're quality names in the SI/tech category, yes — the holding cost is minimal and the upside is significant if the category matures.