~/dnsniffer/issuers/wotrus-ca·rank #22
$ dnsniffer count --issuer wotrus-ca --active
▸ How many domains does WoTrus CA secure?
39,977
active domains whose current TLS certificate was issued by WoTrus CA, as of — 0.02% of all attributed domains.
# rank #22 of all CAs# all records held: 40,901# subdomains: 91# intermediates: 10# China
~/issuers/wotrus-ca/history·active domains
39,977
domains secured by WoTrus CA on 2026-08-31 · ▲ +21,265 (+113.64%) since 2025-06-30
# y-axis starts at 16K, 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
▲ +0.01%
+2 domains
90 days
▲ +3.74%
+1,442 domains
1 year
▲ +31.15%
+9,494 domains
# intermediate CAs
| intermediate | country | domains |
|---|---|---|
| WoTrus RSA DV SSL CA 2 | China | 25,784 |
| WoTrus DV Server CA [Run by the Issuer] | China | 12,679 |
| WoTrus RSA OV SSL CA 2 | China | 848 |
| WoTrus OV Server CA [Run by the Issuer] | China | 434 |
| WoTrus OV SSL CA | China | 124 |
| WoTrus DV SSL CA | China | 101 |
| WoTrus EV Server CA [Run by the Issuer] | China | 3 |
| WoTrus EV SSL CA | China | 2 |
| WoTrus RSA EV SSL CA 2 | China | 1 |
| WoTrus OV SSL Pro CA | China | 1 |
# faq
- ? How many domains does WoTrus CA secure?
- WoTrus CA is the certificate authority for 39,977 active domains as of August 31, 2026 — 0.02% of every domain DNSniffer can attribute to an issuer.
- ? Is WoTrus CA gaining or losing market share?
- The number of domains secured by WoTrus CA has grown by 31.15% over the last year (+9,494 domains).
- ? Which intermediate CAs does WoTrus CA sign from?
- We have seen 10 intermediates under WoTrus CA, the busiest being “WoTrus RSA DV SSL CA 2” with 25,784 domains. The full list, with per-intermediate counts, is on this page.
- ? Where does this number come from?
- DNSniffer ingests Certificate Transparency logs continuously and records the issuer of the most recent certificate seen for each domain, then snapshots the per-issuer count once a day. It measures how much of the live web a CA currently secures, not how many certificates it has issued over its lifetime.