.citadel domain statistics
.citadel has 1 registered domains as of Oct 5, 2026, ranking #902 by size. Since its first check on Feb 24, 2026 it has held steady. At its latest check it changed by 0 domains over 56 days, about +0.0% a week.
Download .citadel history (CSV)
About the .citadel extension
.citadel has been in the internet's root zone since Jul 23, 2016, about 10.2 years, and is operated by Citadel Domain LLC. Its ICANN registry agreement was signed on Jul 23, 2015, 366 days before launch. .citadel is a brand TLD: under Specification 13 of its ICANN agreement, only Citadel Domain LLC 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 .citadel compares
By size, .citadel sits ahead of 16% of tracked TLDs. Next to its 10 nearest-sized neighbours, .citadel out-grew 0; the fastest of that group was .delta at +0.0%.
Biggest moves
Of 9 changes between checks, 0 were gains, 0 were losses and 9 showed no change.
.citadel growth trend
Its 1 names are 0.00% of the 89M domains across every tracked extension. Over the 223 days from Feb 24 to Oct 5 it averaged +0.00% a week, or 0 domains a day. If the latest rate held for 30 days, .citadel would reach about 1 domains (a straight-line projection, not a forecast).
.citadel domains by month
| Month | Domains | Change |
|---|---|---|
| October 2026 | 1 | 0 |
| August 2026 | 1 | 0 |
| June 2026 | 1 | 0 |
| March 2026 | 1 | 0 |
| February 2026 | 1 | – |
Every check
| Date | Domains | Change | Growth | Window | Severity |
|---|---|---|---|---|---|
| Oct 5, 2026 | 1 | 0 | +0.0% | 56 days | |
| Aug 10, 2026 | 1 | 0 | +0.0% | 70 days | |
| Jun 1, 2026 | 1 | 0 | +0.0% | 84 days | |
| Mar 9, 2026 | 1 | 0 | +0.0% | 6 days | |
| Mar 3, 2026 | 1 | 0 | +0.0% | 1 day | |
| Mar 2, 2026 | 1 | 0 | +0.0% | 1 day | |
| Mar 1, 2026 | 1 | 0 | +0.0% | 3 days | |
| Feb 26, 2026 | 1 | 0 | +0.0% | 1 day | |
| Feb 25, 2026 | 1 | 0 | +0.0% | 1 day | |
| Feb 24, 2026 | 1 | – | – | first check |
Questions about .citadel
How many .citadel domains are there?
The .citadel zone listed 1 domains when it was last checked on Oct 5, 2026.
Can anyone register a .citadel domain?
No. .citadel is a brand TLD under Specification 13 of its ICANN registry agreement, so only Citadel Domain LLC and its affiliates can register .citadel names.
Who runs the .citadel domain extension?
.citadel is run by Citadel Domain LLC.
When was .citadel created?
Jul 23, 2016, when it entered the root zone.
Is .citadel growing?
.citadel went from 1 domains on Feb 24, 2026 to 1 on Oct 5, 2026, a change of +0.0%. Its latest rate is about +0.0% a week.
How big is the .citadel domain extension compared to others?
By registered domains, .citadel comes in at #902. Its nearest neighbours are .bosch, .cal, .cbre.