How Many 4-Letter .com Domains Exist? The 456,976 Math

Ask how many 4 letter .com domains exist and you get a precise answer, not an estimate: 456,976 for letters-only names, and 1,679,616 if you count digits too. These numbers are not statistics someone compiled — they fall straight out of the combinatorics of the DNS, and they are the foundation of the entire LLLL.com market.

The 4-letter math: 26^4 = 456,976

A domain label can use the 26 letters a–z. For a four-letter label, each of the four positions is an independent choice among 26 options:

26 × 26 × 26 × 26 = 26^4 = 456,976

That is the whole of the LLLL.com category. Every four-letter .com that exists or ever will exist is one of these 456,976 strings. No new ones can be minted; the supply is capped by arithmetic.

For context on how small that number is: .com has well over 150 million registered domains. The entire four-letter space is a rounding error — roughly 0.3% of the zone.

The 4-character math: 36^4 = 1,679,616

Widen the character set to include the digits 0–9 and each position offers 36 choices:

36 × 36 × 36 × 36 = 36^4 = 1,679,616

This is the 4-character (CCCC) category — names like k7q2.com or 4hub.com. Technically the DNS also permits hyphens in positions two and three (a hyphen cannot start or end a label), which would push the theoretical count higher. In practice the market ignores hyphenated short names entirely, so 1,679,616 is the number that matters.

Within the 4-character set, the useful sub-splits are:

• LLLL (letters only): 456,976 — the premium tier.
• NNNN (digits only): 10,000 — heavily driven by demand from Chinese buyers, for whom numeric names carry meaning.
• Mixed letter/digit combos: 1,679,616 − 456,976 − 10,000 = 1,212,640 — the broad, cheapest tier where names like k7q2.com live.

Why scarcity is the whole story

The numbers above explain both the prices and the availability patterns you see on this site. Because all 456,976 letter combinations were registered years ago, a 4-letter .com can only enter the market when an existing owner sells or lets the name expire. The expiring domains pipeline exists because of this: drops are the sole source of "new" supply.

The mixed 4-character space, by contrast, is over three and a half times larger and has far weaker demand per name. That is why our main index of available 4-character domains always has inventory while letters-only names are rare finds. When a letters-only name does become available at registration fee, it shows up on the premium LLLL.com list.

Pattern classes shrink the supply further

The raw counts overstate what most buyers actually want. Filter the 456,976 LLLL combinations by pronounceability and the supply collapses:

• CVCV (consonant-vowel-consonant-vowel, like mova.com): 21 consonants × 5 vowels × 21 × 5 = 11,025 combinations.
• VCVC: 5 × 21 × 5 × 21 = 11,025.
• CVVC and other semi-pronounceable shapes: a few tens of thousands more.
• Four-letter dictionary words: a few thousand at most.

So the "brandable 4-letter .com" supply is not 456,976 — it is realistically in the tens of thousands, and every single one is already owned by someone. A random combination like zqhf.com can drop and sit available; a clean CVCV essentially never does.

How to use these numbers

The combinatorics give you a mental model for pricing and availability:

1. Letters-only beats mixed. The 456,976 LLLL set is fully registered and trades actively; mixed letter/digit names drop constantly.
2. Pattern beats length. Within the same four-character length, a CVCV can be worth a hundred times a random string.
3. Drops are the only faucet. Since the supply is fixed, monitoring the expiry cycle is the only way to catch a 4 letter .com at registration price.

The math is simple, but it is the reason an entire corner of the domain industry — floor prices, pattern tiers, drop-catching — exists around just 456,976 strings.