Three-Character Domain Availability
There are exactly 47,952 possible 3-character domain names — forty-seven thousand nine hundred fifty-two. If one three-character domain were registered every minute, the entire namespace would be filled in just over 33 days. In .com, that happened decades ago.
Using letters only (a–z), there are 17,576 possible domains. Only 17,576 three-letter combinations exist — fewer than the number of days in 50 years. Every single three-letter .com was registered by the late 1990s.
Allowing both letters and digits (a–z, 0–9) creates 46,656 combinations. With digits included, there are about as many combinations as minutes in a single month. A small enough space that major TLDs are completely saturated.
Here's how saturated each TLD is at this length.
thousand valid combinations
all valid 3-character domain labels (a–z, 0–9, hyphens)
thousand alphabetic
263 using a–z
thousand alphanumeric
363 with digits 0–9
saturation
across 50 TLDs
.com registered
>99.9% of total
Which TLDs Are Most Saturated at 3 Characters?
How Full Is Each TLD at 3 Characters?
| # | TLD | Registered | % Full (Alpha) |
|---|---|---|---|
| 1 | .com | 47,815 | >99.9% |
| 2 | .net | 43,563 | >99.9% |
| 3 | .xyz | 39,180 | >99.9% |
| 4 | .org | 36,309 | >99.9% |
| 5 | .mobi | 27,661 | >99.9% |
| 6 | .info | 27,173 | >99.9% |
| 7 | .app | 22,833 | >99.9% |
| 8 | .ch | 22,500 | >99.9% |
| 9 | .top | 22,500 | >99.9% |
| 10 | .se | 18,216 | >99.9% |
| 11 | .one | 14,691 | 83.6% |
| 12 | .biz | 13,956 | 79.4% |
| 13 | .vip | 12,777 | 72.7% |
| 14 | .world | 12,667 | 72.1% |
| 15 | .dev | 12,237 | 69.6% |
| 16 | .life | 12,013 | 68.3% |
| 17 | .lol | 11,434 | 65.0% |
| 18 | .icu | 10,945 | 62.3% |
| 19 | .asia | 10,099 | 57.5% |
| 20 | .digital | 8,866 | 50.4% |
| 21 | .nu | 8,811 | 50.1% |
| 22 | .online | 8,168 | 46.5% |
| 23 | .bet | 8,027 | 45.7% |
| 24 | 7,914 | 45.0% | |
| 25 | .li | 7,665 | 43.6% |
| 26 | .pro | 7,298 | 41.5% |
| 27 | .services | 7,104 | 40.4% |
| 28 | .agency | 7,017 | 39.9% |
| 29 | .tech | 6,862 | 39.0% |
| 30 | .group | 6,719 | 38.2% |
| 31 | .casino | 6,586 | 37.5% |
| 32 | .ink | 6,391 | 36.4% |
| 33 | .solutions | 6,368 | 36.2% |
| 34 | .live | 6,290 | 35.8% |
| 35 | .ovh | 5,953 | 33.9% |
| 36 | .site | 5,945 | 33.8% |
| 37 | .shop | 5,929 | 33.7% |
| 38 | .ltd | 5,801 | 33.0% |
| 39 | .lat | 5,768 | 32.8% |
| 40 | .club | 5,712 | 32.5% |
| 41 | .studio | 5,385 | 30.6% |
| 42 | .fun | 5,281 | 30.1% |
| 43 | .news | 5,204 | 29.6% |
| 44 | .homes | 4,977 | 28.3% |
| 45 | .today | 4,944 | 28.1% |
| 46 | .link | 4,875 | 27.7% |
| 47 | .company | 4,786 | 27.2% |
| 48 | .design | 4,748 | 27.0% |
| 49 | .network | 4,745 | 27.0% |
| 50 | .global | 4,683 | 26.6% |
What Are Three-Character Domain Names Worth?
Three-character domain names are among the most coveted in the domain industry. With only 17,576 possible alphabetic combinations, they represent an extremely finite resource. In popular TLDs like .com and .net, virtually all 3-character names are registered — making them valuable in the aftermarket.
The scarcity of 3-character domains makes them popular for brand names, abbreviations, and premium resale. Many three-letter .com domains sell for five to six figures on aftermarket platforms.
Why Can’t I Find a Three-Character .com Domain?
All 17,576 possible 3-letter .com domains have been registered since the late 1990s. The same applies to .net, .org, and most legacy TLDs — there are zero 3-character names available for new registration in these extensions.
Why 3-Character Domains Are So Valuable
Three-letter domains (often called “LLL domains” in the industry) are prized for their brevity, memorability, and branding potential. Common uses include:
- Corporate abbreviations — Companies like IBM (ibm.com), CNN (cnn.com), and BBC (bbc.co.uk) built global brands on 3-letter domains.
- Acronyms and initialisms — Industry terms, organization abbreviations, and product codes.
- Premium resale — Average 3-letter .com domains sell for $10,000–$50,000. Pronounceable combinations (e.g., "bix", "lov", "zap") command $50,000–$500,000+.
For new registrations, look at the newer gTLDs in the table above. Extensions like .xyz, .top, .icu, and .online still have 3-character availability, often at standard registration prices.
Explore Three-Character Availability by TLD
How Are These Combination Counts Calculated?
Domain name labels (the part before the dot) follow strict character rules defined in RFC 5891 and RFC 1035. DNS Checker calculates three tiers of possible combinations for each domain length:
Alphabetic (a–z)
263 = 17,576
Only the 26 lowercase letters. The simplest calculation — each position has 26 choices, so 3 positions gives 263.
Alphanumeric (a–z, 0–9)
363 = 46,656
Letters plus digits. Each position has 36 choices. Domain names are case-insensitive, so uppercase and lowercase are equivalent.
All Valid Labels
47,952 total
Includes hyphens, but with restrictions. The total is not simply 373 because hyphens have placement rules.
| Character Set | Characters | Formula | 3-Char Combinations |
|---|---|---|---|
| Alphabetic | a–z (26) | 263 | 17,576 |
| Alphanumeric | a–z, 0–9 (36) | 363 | 46,656 |
| All Valid Labels | a–z, 0–9, hyphen (37) | With placement rules | 47,952 |
Hyphen Placement Rules
- No leading hyphen — the first character must be a letter or digit (36 choices, not 37)
- No trailing hyphen — the last character must also be a letter or digit (36 choices)
- No double-hyphen at positions 3–4 — labels like
xn--exampleare reserved for internationalized domain names (IDN) under RFC 5891 §4.2.3.1. A hyphen in position 3 and position 4 simultaneously is not permitted in standard registrations.
These constraints mean at 3 characters, the double-hyphen rule at positions 3–4 is automatically satisfied since the last character must be alphanumeric. All three counts are mathematical constants that never change — only the number of registered domains (shown in the table above) changes daily.