~/dnsniffer/tlds/cu·rank #1,093
▸ How many .cu domains are registered?
758
active .cu domains as of .
# rank #1,093 of all TLDs ▲ 1 in 30d# all records held: 776# snapshots: 58
~/tlds/cu/history·active domains
758
active .cu domains on 2026-10-14 · ▲ +164 (+27.61%) since 2025-07-31
# y-axis starts at 574.32, 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
▲ +7.52%
+53 domains
90 days
▲ +7.82%
+55 domains
1 year
▲ +26.97%
+161 domains
# faq
- ? How many .cu domains are registered?
- There are 758 active .cu domains as of October 14, 2026, according to DNSniffer’s daily count of zone-file and certificate-transparency records.
- ? Is .cu growing or shrinking?
- .cu has grown by 26.97% over the last year (+161 domains).
- ? Where does the .cu 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 .cu 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.