.aco domain statistics
On Aug 16, 2026 the .aco zone held 381 domains, which makes it #571 in RootFetch's ranking. Since its first check on Feb 25, 2026 it has grown by 3.5% (+13 domains). At its latest check it changed by +1 domains over 14 days, about +0.1% a week.
About the .aco extension
ACO Severin Ahlmann GmbH & Co. KG runs .aco, which went live in the root zone on Aug 27, 2015 (11.1 years ago). Its ICANN registry agreement was signed on Jan 8, 2015, 231 days before launch. .aco is a brand TLD: under Specification 13 of its ICANN agreement, only ACO Severin Ahlmann GmbH & Co. KG and its affiliates can register names in it. That is why its domain count stays small and mostly reflects the company's own sites.
Registry details from ICANN's gTLD list.
How .aco compares
.aco is bigger than 47% of the TLDs in this dataset. .aco beat 5 of the 10 similar-sized TLDs on growth; the fastest of that group was .watches at +37.4%.
Biggest moves
Of 6 changes between checks, 2 were gains, 0 were losses and 4 showed no change. The biggest gain was +12 domains (+3.3%) between Mar 3, 2026 and Aug 2, 2026.
.aco growth trend
That is a 0.00% slice of the 89M domains in the whole dataset. Over the 172 days from Feb 25 to Aug 16 it averaged +0.14% a week, or 0 domains a day. Its strongest month on record was August 2026 (+13); its weakest was March 2026 (0). If the latest rate held for 30 days, .aco would reach about 383 domains (a straight-line projection, not a forecast).
.aco domains by month
| Month | Domains | Change |
|---|---|---|
| August 2026 | 381 | +13 |
| March 2026 | 368 | 0 |
| February 2026 | 368 | – |
Every check
| Date | Domains | Change | Growth | Window | Severity |
|---|---|---|---|---|---|
| Aug 16, 2026 | 381 | +1 | +0.3% | 14 days | |
| Aug 2, 2026 | 380 | +12 | +3.3% | 152 days | |
| Mar 3, 2026 | 368 | 0 | +0.0% | 1 day | |
| Mar 2, 2026 | 368 | 0 | +0.0% | 1 day | |
| Mar 1, 2026 | 368 | 0 | +0.0% | 3 days | |
| Feb 26, 2026 | 368 | 0 | +0.0% | 1 day | |
| Feb 25, 2026 | 368 | – | – | first check |
Questions about .aco
How many .aco domains are there?
As of Aug 16, 2026, there are 381 registered .aco domains.
Can anyone register a .aco domain?
No. .aco is a brand TLD under Specification 13 of its ICANN registry agreement, so only ACO Severin Ahlmann GmbH & Co. KG and its affiliates can register .aco names.
Who runs the .aco domain extension?
ACO Severin Ahlmann GmbH & Co. KG.
When was .aco created?
.aco went live in the DNS root on Aug 27, 2015.
Is .aco growing?
.aco went from 368 domains on Feb 25, 2026 to 381 on Aug 16, 2026, a change of +3.5%. Its latest rate is about +0.1% a week.
How big is the .aco domain extension compared to others?
It ranks #571 by domain count. Its nearest neighbours are .世界, .شبكة, .creditunion.