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~/dnsniffer/tlds/koeln·rank #378

▸ How many .koeln domains are registered?

17,036

active .koeln domains as of .

# rank #378 of all TLDs ▼ 13 in 30d# all records held: 20,057# snapshots: 60
search .koeln domains download the .koeln dataset
~/tlds/koeln/history·active domains
17,036
active .koeln domains on 2026-10-15 · ▲ +651 (+3.97%) since 2025-06-30
16.3K16.6K16.9K17.2K17.6K2025-06-30: 16,385 active2025-07-31: 16,623 active2025-08-31: 16,628 active2025-09-30: 16,628 active2025-10-31: 16,628 active2025-11-30: 16,628 active2025-12-31: 16,698 active2026-01-31: 16,729 active2026-02-28: 16,729 active2026-03-31: 16,729 active2026-04-30: 17,256 active2026-05-31: 17,305 active2026-06-30: 17,368 active2026-07-31: 17,441 active2026-08-31: 17,441 active2026-09-01: 17,439 active2026-09-02: 17,442 active2026-09-03: 17,264 active2026-09-04: 17,258 active2026-09-05: 17,260 active2026-09-06: 17,256 active2026-09-07: 17,185 active2026-09-08: 17,181 active2026-09-09: 17,181 active2026-09-10: 17,177 active2026-09-11: 17,173 active2026-09-12: 17,174 active2026-09-13: 17,173 active2026-09-14: 17,167 active2026-09-15: 17,156 active2026-09-16: 17,155 active2026-09-17: 17,151 active2026-09-18: 17,095 active2026-09-19: 17,088 active2026-09-20: 17,079 active2026-09-21: 17,080 active2026-09-22: 17,076 active2026-09-23: 17,074 active2026-09-24: 17,079 active2026-09-25: 17,079 active2026-09-26: 17,078 active2026-09-27: 17,077 active2026-09-28: 17,074 active2026-09-29: 17,073 active2026-09-30: 17,073 active2026-10-01: 17,052 active2026-10-02: 17,053 active2026-10-03: 17,050 active2026-10-04: 17,050 active2026-10-05: 17,051 active2026-10-06: 17,051 active2026-10-07: 17,047 active2026-10-08: 17,044 active2026-10-09: 17,047 active2026-10-10: 17,051 active2026-10-11: 17,044 active2026-10-12: 17,038 active2026-10-13: 17,037 active2026-10-14: 17,037 active2026-10-15: 17,036 active2025-06-302026-10-15

# y-axis starts at 16.3K, not zero - domain counts move by fractions of a percent a day. Dashed segments are estimated: reconstructed from certificate first-seen dates before daily snapshots began, not measured on the day.

# change over time
30 days
▼ -0.70%
-120 domains
90 days
▼ -1.91%
-332 domains
1 year
▲ +2.45%
+408 domains
# faq
? How many .koeln domains are registered?
There are 17,036 active .koeln domains as of October 15, 2026, according to DNSniffer’s daily count of zone-file and certificate-transparency records.
? Is .koeln growing or shrinking?
.koeln has grown by 2.45% over the last year (+408 domains).
? Where does the .koeln domain count come from?
We ingest ICANN CZDS zone files and Certificate Transparency logs continuously and snapshot the per-TLD count once a day. A .koeln domain is counted as active if it appeared in a zone file in the last 2 days, or - where no zone file is published - if a certificate was issued for it in the last 12 months.
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