~/dnsniffer/tlds/icu·rank #58
▸ How many .icu domains are registered?
582,910
active .icu domains as of .
# rank #58 of all TLDs ▼ 1 in 30d# all records held: 1,136,488# snapshots: 60
~/tlds/icu/history·active domains
582,910
active .icu domains on 2026-10-15 · ▲ +530,872 (+1,020.16%) since 2025-06-30
# y-axis starts at 0, 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
▼ -0.85%
-5,017 domains
90 days
▲ +6.26%
+34,326 domains
1 year
▲ +620.03%
+501,954 domains
# faq
- ? How many .icu domains are registered?
- There are 582,910 active .icu domains as of October 15, 2026, according to DNSniffer’s daily count of zone-file and certificate-transparency records.
- ? Is .icu growing or shrinking?
- .icu has grown by 620.03% over the last year (+501,954 domains).
- ? Where does the .icu 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 .icu 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.