.koeln domain statistics
.koeln has 16,920 registered domains as of Aug 15, 2026, ranking #205 by size. Since its first check on Feb 24, 2026 it has shrunk by 2.6% (−445 domains). At its latest check it changed by −28 domains over 14 days, about −0.1% a week.
About the .koeln extension
.koeln has been in the internet's root zone since Mar 5, 2014, about 12.6 years, and is operated by domainworx Service & Management GmbH. Its ICANN registry agreement was signed on Jan 9, 2014, 55 days before launch.
Registry details from ICANN's gTLD list.
Other extensions run by domainworx Service & Management GmbH
domainworx Service & Management GmbH operates 3 of the TLDs RootFetch tracks, holding 35,616 domains in total. .koeln is #1 of them by size, with 47.5% of the group's domains.
How .koeln compares
By size, .koeln sits ahead of 81% of tracked TLDs. Since Feb 24 it has changed −2.6%, against a median of +3.5% for large TLDs tracked as long, which puts it ahead of 18% of them. Its latest weekly rate, −0.1%, is faster than 16% of large TLDs right now. Next to its 10 nearest-sized neighbours, .koeln out-grew 2; the fastest of that group was .study at +95.3%.
Biggest moves
Of 7 changes between checks, 1 was a gain, 4 were losses and 2 showed no change. The biggest gain was +2 domains (+0.0%) between Feb 26, 2026 and Mar 1, 2026. The biggest drop was −414 (−2.4%) between Mar 3, 2026 and Aug 1, 2026.
.koeln growth trend
Its 16,920 names are 0.02% of the 89M domains across every tracked extension. Over the 172 days from Feb 24 to Aug 15 it averaged −0.11% a week, or −3 domains a day. Its strongest month on record was March 2026 (+1); its weakest was August 2026 (−442). If the latest rate held for 30 days, .koeln would reach about 16,860 domains (a straight-line projection, not a forecast).
.koeln domains by month
| Month | Domains | Change |
|---|---|---|
| August 2026 | 16,920 | −442 |
| March 2026 | 17,362 | +1 |
| February 2026 | 17,361 | – |
Every check
| Date | Domains | Change | Growth | Window | Severity |
|---|---|---|---|---|---|
| Aug 15, 2026 | 16,920 | −28 | −0.2% | 14 days | |
| Aug 1, 2026 | 16,948 | −414 | −2.4% | 151 days | |
| Mar 3, 2026 | 17,362 | 0 | +0.0% | 1 day | |
| Mar 2, 2026 | 17,362 | −1 | −0.0% | 1 day | |
| Mar 1, 2026 | 17,363 | +2 | +0.0% | 3 days | |
| Feb 26, 2026 | 17,361 | −4 | −0.0% | 1 day | |
| Feb 25, 2026 | 17,365 | 0 | +0.0% | 1 day | |
| Feb 24, 2026 | 17,365 | – | – | first check |
Questions about .koeln
How many .koeln domains are there?
The .koeln zone listed 16,920 domains when it was last checked on Aug 15, 2026.
Can anyone register a .koeln domain?
Generally yes: .koeln has no brand-only clause in its ICANN agreement, so registrars sell it to the public. domainworx Service & Management GmbH can still apply eligibility rules.
Who runs the .koeln domain extension?
.koeln is run by domainworx Service & Management GmbH.
When was .koeln created?
Mar 5, 2014, when it entered the root zone.
Is .koeln growing?
.koeln went from 17,365 domains on Feb 24, 2026 to 16,920 on Aug 15, 2026, a change of −2.6%. Its latest rate is about −0.1% a week.
How big is the .koeln domain extension compared to others?
By registered domains, .koeln comes in at #205. Its nearest neighbours are .gallery, .partners, .pub.