.koeln

16,920 domains as of 13 Aug 2026

Domains

16,920

13 Aug 2026

30-day change

–

Signed in root

✔ Yes

DS record present

Type

Generic

ASCII

Registrar figures are for April 2026. ICANN publishes monthly registry reports about three months in arrears, and they are the only source that attributes domains to registrars — zone files do not contain registrar information. Methodology.

Registry details

From the IANA Root Zone Database and RDAP bootstrap.

Registry operator: dotKoeln GmbH
Technical backend: RyCE via ns suffix
Delegated: 5 Mar 2014
Nameservers: dns.ryce-rsp.com, ns1.dns.business, ns1.ryce-rsp.com
RDAP: https://rdap.ryce-rsp.com/rdap
Zone data: CZDS access approved — counted daily

Registrar share

individual · combined

Individual ICANN accreditations, matching the registry report line for line. 38 reported volume in this TLD.

17.6kdomains reported

Share of .koeln by registrar
RegistryGate GmbH	4,401	24.95%
IONOS SE	3,644	20.66%
Cronon GmbH	2,442	13.85%
united-domains GmbH	1,505	8.53%
Mesh Digital Limited	1,227	6.96%
InterNetX GmbH	1,129	6.4%
Key-Systems, LLC	858	4.86%
Dynadot Inc	403	2.28%
Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USA	318	1.8%
INWX GmbH	247	1.4%
Other28 more registrars	1,464	8.3%

Domains by month, 2024–present

From ICANN's monthly registry reports — the registry's own count, summed across registrars. This is the long history: it reaches back to delegation, where the daily series below can only start when this site began collecting zone files.

Month	Domains	Change	Registrars	Net adds	Deletes
Apr 2026	17,638	▲ +23	38	88	75
Mar 2026	17,615	▼ -15	38	66	90
Feb 2026	17,630	▼ -40	38	58	102
Jan 2026	17,670	▼ -22	38	75	103
Dec 2025	17,692	▼ -41	38	66	130
Nov 2025	17,733	▼ -483	39	59	514
Oct 2025	18,216	▼ -96	39	63	154
Sep 2025	18,312	▼ -22	40	52	76
Aug 2025	18,334	▼ -17	40	68	84
Jul 2025	18,351	▼ -40	40	61	111
Jun 2025	18,391	▼ -48	40	54	94
May 2025	18,439	▼ -8	40	84	105
Apr 2025	18,447	▲ +281	40	414	129
Mar 2025	18,166	▼ -107	40	86	173
Feb 2025	18,273	▼ -31	40	54	85
Jan 2025	18,304	▼ -50	40	67	127
Dec 2024	18,354	▼ -194	40	55	206
Nov 2024	18,548	▼ -388	39	73	499
Oct 2024	18,936	▼ -90	39	79	184
Sep 2024	19,026	▼ -66	39	51	108
Aug 2024	19,092	▼ -40	39	48	93
Jul 2024	19,132	▼ -35	40	58	96
Jun 2024	19,167	–	40	57	116

Domains over time

Counted from daily zone files. Names with at least one NS record or a DS record.

Daily adds and drops

Day-over-day difference of the zone's name list.

Added
Dropped

Registrars

Registrar	Domains	Share	Net adds	Transfers in	Deletes
RegistryGate GmbH	4,401	25%	▲ +8	4	13
IONOS SE	3,644	20.7%	▲ +32	0	12
Cronon GmbH	2,442	13.8%	0	0	7
united-domains GmbH	1,505	8.5%	▲ +7	1	6
Mesh Digital Limited	1,227	7%	▲ +3	0	8
InterNetX GmbH	1,129	6.4%	▲ +19	6	10
Key-Systems, LLC	858	4.9%	▲ +4	3	4
Dynadot Inc	403	2.3%	▲ +3	0	3
Ascio Technologies, Inc. Danmark - Filial af Ascio technologies, Inc. USA	318	1.8%	0	2	2
INWX GmbH	247	1.4%	▲ +9	1	1
Vautron Rechenzentrum AG	222	1.3%	0	1	1
Dreamscape Networks International Pte Ltd	194	1.1%	▲ +1	0	0
EPAG Domainservices GmbH	171	1%	0	0	1
http.net Internet GmbH	117	0.7%	0	1	0
COREhub, S.R.L.	111	0.6%	▲ +1	0	1
CPS-Datensysteme GmbH	92	0.5%	0	0	0
Variomedia AG	81	0.5%	0	0	0
1API GmbH	77	0.4%	0	0	2
MarkMonitor Inc.	64	0.4%	0	0	0
OVH sas	55	0.3%	0	0	1
Nom-iq Ltd. dba COM LAUDE	48	0.3%	0	0	0
EuroDNS S.A.	42	0.2%	0	0	0
Ledl.net GmbH & Co KG	34	0.2%	0	0	1
CSC Corporate Domains, Inc.	29	0.2%	0	0	0
Hosting Concepts B.V. d/b/a Registrar.eu	22	0.1%	0	0	0
Secura GmbH	16	0.1%	0	0	0
Global Village GmbH	16	0.1%	0	0	0
NETIM SAS	13	0.1%	▲ +1	0	0
CSL Computer Service Langenbach GmbH d/b/a joker.com	12	0.1%	0	0	0
Gandi SAS	10	0.1%	0	1	0
Realtime Register B.V.	9	0.1%	0	1	1
101domain GRS Limited	6	0%	0	0	0
SafeBrands SAS	6	0%	0	0	0
Nameshield SAS	5	0%	0	0	0
Lexsynergy Limited	5	0%	0	0	0
Instra Corporation Pty Ltd.	4	0%	0	0	0
Safenames Ltd	2	0%	0	0	0
Marcaria International LLC	1	0%	0	0	1

Data currency. Domain counts on this page are from zone files dated 13 August 2026 and refresh daily. Registrar figures are from ICANN's monthly registry reports for April 2026, which ICANN publishes about three months in arrears; zone files contain no registrar information, so no fresher source exists. Full detail on methodology and live pipeline status.