~/dnsniffer/issuers/centre-testing-international-group-co·rank #169
$ dnsniffer count --issuer centre-testing-international-group-co --active
▸ How many domains does Centre Testing International Group Co secure?
28
active domains whose current TLS certificate was issued by Centre Testing International Group Co, as of — 0.00% of all attributed domains.
# rank #169 of all CAs# all records held: 30# subdomains: 2# intermediates: 3# China
~/issuers/centre-testing-international-group-co/history·active domains
28
domains secured by Centre Testing International Group Co on 2026-08-31 · ▲ +19 (+211.11%) since 2025-06-30
# y-axis starts at 6.720000000000001, 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
▲ +0.00%
+0 domains
90 days
▲ +0.00%
+0 domains
1 year
▲ +7.69%
+2 domains
# intermediate CAs
| intermediate | country | domains |
|---|---|---|
| CTI RSA OV SSL CA | China | 16 |
| CTI RSA DV SSL CA | China | 11 |
| CTI RSA EV SSL CA | China | 1 |
# faq
- ? How many domains does Centre Testing International Group Co secure?
- Centre Testing International Group Co is the certificate authority for 28 active domains as of August 31, 2026 — 0.00% of every domain DNSniffer can attribute to an issuer.
- ? Is Centre Testing International Group Co gaining or losing market share?
- The number of domains secured by Centre Testing International Group Co has grown by 7.69% over the last year (+2 domains).
- ? Which intermediate CAs does Centre Testing International Group Co sign from?
- We have seen 3 intermediates under Centre Testing International Group Co, the busiest being “CTI RSA OV SSL CA” with 16 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.