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~/dnsniffer/issuers/cybertrust-japan·rank #198

▸ How many domains does Cybertrust Japan secure?

6

active domains whose current TLS certificate was issued by Cybertrust Japan, as of - 0.00% of all attributed domains.

# rank #198 of all CAs ▼ 6 in 30d# all records held: 6# subdomains: 0# intermediates: 2# Japan
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~/issuers/cybertrust-japan/history·active domains
6
domains secured by Cybertrust Japan on 2026-10-14 · ▼ -138 (-95.83%) since 2025-06-30
089.42178.84268.26357.682025-06-30: 144 active2025-07-31: 261 active2025-08-31: 261 active2025-09-30: 261 active2025-10-31: 261 active2025-11-30: 261 active2025-12-31: 263 active2026-01-31: 264 active2026-02-28: 264 active2026-03-31: 264 active2026-04-30: 270 active2026-05-31: 271 active2026-06-30: 272 active2026-07-31: 277 active2026-08-31: 276 active2026-09-01: 320 active2026-09-02: 287 active2026-09-03: 122 active2026-09-04: 18 active2026-09-05: 14 active2026-09-06: 14 active2026-09-07: 11 active2026-09-08: 9 active2026-09-09: 9 active2026-09-10: 9 active2026-09-11: 8 active2026-09-12: 7 active2026-09-13: 7 active2026-09-14: 6 active2026-09-15: 6 active2026-09-16: 6 active2026-09-17: 6 active2026-09-18: 6 active2026-09-19: 6 active2026-09-20: 6 active2026-09-21: 6 active2026-09-22: 6 active2026-09-23: 6 active2026-09-24: 6 active2026-09-25: 6 active2026-09-26: 6 active2026-09-27: 6 active2026-09-28: 6 active2026-09-29: 6 active2026-09-30: 6 active2026-10-01: 6 active2026-10-02: 6 active2026-10-03: 6 active2026-10-04: 6 active2026-10-05: 6 active2026-10-06: 6 active2026-10-07: 6 active2026-10-08: 6 active2026-10-09: 6 active2026-10-10: 6 active2026-10-11: 6 active2026-10-12: 6 active2026-10-13: 6 active2026-10-14: 6 active2025-06-302026-10-14

# 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
▲ +0.00%
+0 domains
90 days
▼ -97.79%
-266 domains
1 year
▼ -97.70%
-255 domains
# intermediate CAs
Intermediate certificate authorities operating under Cybertrust Japan, with the number of active domains each currently secures.
intermediatecountrydomains
Cybertrust iTrust OV TLS RSA4096 CA 2025 E1Japan4
Cybertrust iTrust EV TLS RSA4096 CA 2025 E1Japan2
# faq
? How many domains does Cybertrust Japan secure?
Cybertrust Japan is the certificate authority for 6 active domains as of October 14, 2026 - 0.00% of every domain DNSniffer can attribute to an issuer.
? Is Cybertrust Japan gaining or losing market share?
The number of domains secured by Cybertrust Japan has shrunk by 97.70% over the last year (-255 domains).
? Which intermediate CAs does Cybertrust Japan sign from?
We have seen 2 intermediates under Cybertrust Japan, the busiest being “Cybertrust iTrust OV TLS RSA4096 CA 2025 E1” with 4 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.
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