Checked at the .io registry and Name.com · November 3, 2026
Every common English word is taken as a .com. Not as a .io: of the 50,000 most common words, 15,674 still sell at the normal .io price. The most common is including.io, the 256th most common word on the list.
Chosen by reading the free words for ones that fit a field, and checked again at the .io registry and Name.com on November 3, 2026: every one was unregistered and sold at the normal price. Each opens a live check, with the price and a link to register.
From every pronounceable four-letter .io still at the normal price.
In order of how often each word is used in English; the number is its place among the 50,000 words we checked. Each one opens a live check before you buy. Words about violence, illness or bodily functions are left out of these highlights; every word is in the full list below.
All 15,674 at the normal price, most common first. Filter by the letters a word starts or ends with, cap its length, or sort the shortest first.
Loading all 15,674 words...
Download every word checked, with its status (CSV, CC BY-SA 4.0)
A normal-price .io costs $29.98 for the first year at Namecheap; it renews at $79.99 a year at Name.com. A free dictionary word costs the same as any other normal .io name. Name.com priced none of the free words as a premium name. For what .io costs over several years, and its rules, see the .io extension.
68.7% of the words are registered as .io or reserved by the registry. Only 4 of the 1,000 most common words are left, while 47.4% of the words ranked 25,001 to 50,000 still sell at the normal price (“Free” below).
| Commonness rank | Words | Taken | Free |
|---|---|---|---|
| 1 to 1,000 | 1,000 | 99.6% | 4 |
| 1,001 to 5,000 | 4,000 | 97.9% | 85 |
| 5,001 to 10,000 | 5,000 | 91.7% | 415 |
| 10,001 to 25,000 | 15,000 | 77.9% | 3,311 |
| 25,001 to 50,000 | 25,000 | 52.6% | 11,859 |
| Letters | Words | Taken | Free |
|---|---|---|---|
| 2 | 96 | 100.0% | 0 |
| 3 | 922 | 100.0% | 0 |
| 4 | 2,833 | 99.5% | 15 |
| 5 | 4,735 | 91.5% | 404 |
| 6 | 6,613 | 83.1% | 1,119 |
| 7 | 7,782 | 73.6% | 2,052 |
| 8 | 7,581 | 66.2% | 2,565 |
| 9 | 6,523 | 61.8% | 2,493 |
| 10 | 5,114 | 54.6% | 2,324 |
| 11 | 3,414 | 46.8% | 1,815 |
| 12 | 2,131 | 39.8% | 1,283 |
| 13 or more | 2,256 | 28.9% | 1,604 |
The shortest words still at the normal .io price, most common first within each length. For made-up four-letter names instead, see four-letter .io names.
The words are the 50,000 most common words of our one-word .com study’s dictionary, ranked by how often they are used in wordfreq’s English data. On November 3, 2026 each was looked up at the .io registry’s own nameservers; every word without nameservers was then checked at Name.com, which reports words registered without nameservers and words the registry reserves as unavailable (914 of them), and premium words with their price. Rarer words were not checked. The list is free to reuse under CC BY-SA 4.0.
Prefer .ai? See one-word .ai domains. Want something other than a single word? The finder suggests names for your idea and checks them across hundreds of extensions.