~/dnsniffer/tlds/cz·rank #44
▸ How many .cz domains are registered?
901,119
active .cz domains as of .
# rank #44 of all TLDs# all records held: 943,320# snapshots: 59
~/tlds/cz/history·active domains
901,119
active .cz domains on 2026-10-14 · ▲ +886,416 (+6,028.81%) 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
▲ +4.38%
+37,817 domains
90 days
▲ +5.26%
+45,012 domains
1 year
▲ +29.96%
+207,762 domains
# faq
- ? How many .cz domains are registered?
- There are 901,119 active .cz domains as of October 14, 2026, according to DNSniffer’s daily count of zone-file and certificate-transparency records.
- ? Is .cz growing or shrinking?
- .cz has grown by 29.96% over the last year (+207,762 domains).
- ? Where does the .cz 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 .cz 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.