4-Letter Domain Names
No 4 letter names in our inventory right now
Straight answer instead of filler: every pronounceable four letter .com and .ai was registered years ago, so these trade owner to owner rather than sitting on a shelf. The shortest names we hold today start at five characters, and the sale comps further down will help you value a four letter name wherever you find one.
Why 4-Letter Domains?
4-letter domains (LLLL domains) offer the perfect balance between rarity and availability. They're short enough to be memorable but more accessible than ultra-rare 3-letter domains.
Perfect for Acronyms
- Company abbreviations (like MSFT, AAPL, GOOG)
- Industry acronyms (SaaS, CRM, API)
- Product names and brand abbreviations
- Memorable ticker-style domains
- Global brands that work across languages
The LLLL Advantage
While 3-letter domains are extremely rare and expensive, 4-letter domains offer more options at more accessible price points. They're still short enough to be memorable and work well for companies that use acronyms or abbreviated brand names.
What 4 Letter Domains Actually Sell For
Reported comps are the only sound basis for a counter-offer. Sellers of short names anchor high because record sales are public, so price against names of similar quality that actually closed.
Reported 4 letter .ai sales
| Domain | Price | Year |
|---|---|---|
| Home.ai | $800,000 | 2025 |
| Omni.ai | $750,000 | 2026 |
| Mini.ai | $115,150 | 2025 |
| Ado.ai (3 letters, for reference) | $75,000 | 2025 |
Mini.ai and Ado.ai closed about $40,000 apart despite the extra character. Meaning drives price far harder than length does.
Price tiers by name quality
Holding cost note: .ai requires a minimum two year registration term, and wholesale pricing rose $10 per year on March 5, 2026, so renewals run roughly $130 to $172 per cycle.
4 Letter .ai Domains for Sale: Are Any Still Available?
A lot of people reach this page searching specifically for four-letter .ai names. Here is what that market actually looks like in 2026.
Not at registration price. There are 456,976 possible four-letter combinations, and on .ai the pronounceable ones went first and went fast. More than one million .ai domains were registered as of 2 January 2026. BoldDomains holds no four-letter .ai names today, and the ones that do change hands are aftermarket sales in the five and six figures, as the comps above show. The realistic route for most teams is five or six letters, or a two-word .ai name.
Four letters versus the alternatives
| Option | Availability | Rough cost | Trade-off |
|---|---|---|---|
| Four-letter .ai | Aftermarket only | Five to six figures | Shortest realistic .ai, but priced as a trophy asset |
| Five and six letter .ai | Listed here now | Four figures | One or two extra characters, an order of magnitude cheaper |
| Two-word .ai | Deepest inventory we hold | Four figures | Longer to type, but the name explains the product |
| Four-letter .com | Aftermarket only | Four to five figures | Broader trust, no AI signal in the extension |
Worth knowing before you budget: .ai bills through the registry in two-year blocks at $80 per year since 5 March 2026, so the renewal floor is $160 no matter how short the name is. For the shortest .ai names we actually hold, see short .ai domains; for names that describe the product, two word .ai domains is the deepest list on the site. The registry pricing above, along with registration counts by year, is documented on our .ai domain statistics page.
Last updated July 2026
Frequently Asked Questions
How many 4-letter .COM domains exist?
There are 456,976 possible 4-letter .COM combinations (26^4). While more available than 3-letter domains, premium LLLLs are still valuable and sought after.
What makes a 4-letter domain valuable?
The most valuable 4-letter domains are pronounceable, have meaning as acronyms, or use common letter patterns. Domains that spell words or have obvious meanings command higher prices. See how much a domain name is worth for the factors that set the price, or step up a character to 5-letter domains for more available options.
Should I choose a 4-letter domain for my startup?
If your company has a 4-word name that abbreviates well, or if you want a short, memorable domain without the premium of 3-letter names, LLLL domains are an excellent choice. They are short enough to brand and own, with far more available combinations than three-letter names.
Are 4 letter domains still available?
Yes, four-letter domains are still available, but not by hand-registration: there are 456,976 possible LLLL combinations and the clean ones were claimed long ago. The realistic way to get one is the aftermarket, where owners list names for sale. Search by length on a curated marketplace to see what is genuinely available right now. If the exact name you want is taken, read how to buy a domain that is already taken.
Are there 4 letter .ai domains for sale?
Yes. Four letters is a favorite length for AI startups because it is short enough to own outright while still reading as a real word or tight invented brand on the .ai extension. Browse our short .ai domains for three to five letter AI names, or see the full .ai domains collection.
Compare other short lengths and extensions:
Last updated June 2026
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