Stats
ccTLD · CZ.NIC, z.s.p.o

.cz TLD stats

.cz held 1,604,714 names in September 2026, by CZ.NIC, z.s.p.o’s own figures; a third-party estimate put it at about 1,605,452 in October 2026; by 22 Oct 2026 certificates had shown us 262,786 of them, confirmed in DNS.

1.60M
names, September 2026, the registry’s own figure
262,786
seen in certificates by 22 Oct 2026, a floor

Cross-checkThe registry reported 1,604,714 names for Sep 2026; by Oct 22, 2026 certificates had shown us 262,786 of them, 16.4%. A floor, not a count: a name that never appears in a certificate is not here, and one that does is counted only once DNS confirms it.

last night, in detail

Oct 22, 2026
What moved · on Oct 22, 2026
first seen by us
+15,879
gone from DNS
0
changed nameservers
0
Net
+15,879
Oct 17, 2026 to Oct 22, 2026 · axis starts at the data, not at zero

Names seen in certificate transparency logs and confirmed in DNS, as of Oct 22, 2026. A floor, not a count of the TLD: a name that never appears in a certificate is not here, and we hold no zone file for .cz. The registry’s own figure is the count; this one says how much of it we can see name by name.

Oct 2026: 1,605,452 — third-party estimate; the registry has not published that month yet.

how many names, month by month

Nov 2016 to Oct 2026

Names under management at month end, as the registry reported it. Dashed months are third-party estimates.

everything else