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~/dnsniffer/issuers/the-trustico-group·rank #56

▸ How many domains does The Trustico Group secure?

3,574

active domains whose current TLS certificate was issued by The Trustico Group, as of - 0.00% of all attributed domains.

# rank #56 of all CAs ▼ 1 in 30d# all records held: 3,682# subdomains: 163# intermediates: 6# United Kingdom
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~/issuers/the-trustico-group/history·active domains
3,574
domains secured by The Trustico Group on 2026-10-15 · ▲ +3,024 (+549.82%) since 2025-06-30
186.521.1K2.1K3.0K3.9K2025-06-30: 550 active2025-07-31: 3,176 active2025-08-31: 3,187 active2025-09-30: 3,189 active2025-10-31: 3,189 active2025-11-30: 3,189 active2025-12-31: 3,302 active2026-01-31: 3,336 active2026-02-28: 3,336 active2026-03-31: 3,336 active2026-04-30: 3,434 active2026-05-31: 3,471 active2026-06-30: 3,497 active2026-07-31: 3,530 active2026-08-31: 3,530 active2026-09-01: 3,522 active2026-09-02: 3,527 active2026-09-03: 3,250 active2026-09-04: 3,141 active2026-09-05: 3,146 active2026-09-06: 3,140 active2026-09-07: 3,134 active2026-09-08: 3,141 active2026-09-09: 3,143 active2026-09-10: 3,143 active2026-09-11: 3,146 active2026-09-12: 3,151 active2026-09-13: 3,145 active2026-09-14: 3,144 active2026-09-15: 3,147 active2026-09-16: 3,151 active2026-09-17: 3,150 active2026-09-18: 3,151 active2026-09-19: 3,154 active2026-09-20: 3,146 active2026-09-21: 3,139 active2026-09-22: 3,139 active2026-09-23: 3,125 active2026-09-24: 3,573 active2026-09-25: 3,579 active2026-09-26: 3,570 active2026-09-27: 3,565 active2026-09-28: 3,561 active2026-09-29: 3,555 active2026-09-30: 3,556 active2026-10-01: 3,556 active2026-10-02: 3,556 active2026-10-03: 3,555 active2026-10-04: 3,522 active2026-10-05: 3,513 active2026-10-06: 3,521 active2026-10-07: 3,529 active2026-10-08: 3,532 active2026-10-09: 3,540 active2026-10-10: 3,546 active2026-10-11: 3,543 active2026-10-12: 3,536 active2026-10-13: 3,554 active2026-10-14: 3,564 active2026-10-15: 3,574 active2025-06-302026-10-15

# y-axis starts at 186.52, 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
▲ +13.57%
+427 domains
90 days
▲ +2.20%
+77 domains
1 year
▲ +12.07%
+385 domains
# intermediate CAs
Intermediate certificate authorities operating under The Trustico Group, with the number of active domains each currently secures.
intermediatecountrydomains
Trustico RSA DV SSL CA 2-2,416
Trustico RSA DV CAUnited Kingdom1,138
Trustico RSA OV SSL CA 2United Kingdom10
Trustico RSA EV CAUnited Kingdom5
Trustico RSA EV SSL CA 2United Kingdom5
Trustico RSA OV CAUnited Kingdom0
# faq
? How many domains does The Trustico Group secure?
The Trustico Group is the certificate authority for 3,574 active domains as of October 15, 2026 - 0.00% of every domain DNSniffer can attribute to an issuer.
? Is The Trustico Group gaining or losing market share?
The number of domains secured by The Trustico Group has grown by 12.07% over the last year (+385 domains).
? Which intermediate CAs does The Trustico Group sign from?
We have seen 6 intermediates under The Trustico Group, the busiest being “Trustico RSA DV SSL CA 2” with 2,416 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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