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~/dnsniffer/issuers/google-trust-services·rank #3

▸ How many domains does Google Trust Services secure?

23,821,463

active domains whose current TLS certificate was issued by Google Trust Services, as of - 10.03% of all attributed domains.

# rank #3 of all CAs# all records held: 27,252,333# subdomains: 173# intermediates: 9# United States
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~/issuers/google-trust-services/history·active domains
23,821,463
domains secured by Google Trust Services on 2026-10-15 · ▲ +14,495,013 (+155.42%) since 2025-06-30
7.59M12.08M16.57M21.07M25.56M2025-06-30: 9,326,450 active2025-07-31: 14,340,167 active2025-08-31: 14,420,793 active2025-09-30: 14,428,528 active2025-10-31: 14,428,528 active2025-11-30: 14,428,528 active2025-12-31: 16,874,600 active2026-01-31: 18,014,687 active2026-02-28: 18,014,687 active2026-03-31: 18,014,687 active2026-04-30: 20,376,114 active2026-05-31: 21,153,643 active2026-06-30: 21,896,044 active2026-07-31: 22,655,651 active2026-08-31: 22,652,407 active2026-09-01: 22,615,922 active2026-09-02: 22,665,995 active2026-09-03: 22,678,090 active2026-09-04: 22,716,462 active2026-09-05: 22,733,310 active2026-09-06: 22,775,454 active2026-09-07: 22,800,837 active2026-09-08: 22,816,204 active2026-09-09: 22,841,793 active2026-09-10: 22,851,751 active2026-09-11: 22,916,585 active2026-09-12: 22,957,920 active2026-09-13: 22,986,528 active2026-09-14: 23,008,520 active2026-09-15: 23,040,768 active2026-09-16: 23,061,339 active2026-09-17: 23,092,838 active2026-09-18: 23,119,898 active2026-09-19: 23,137,594 active2026-09-20: 23,155,301 active2026-09-21: 23,179,386 active2026-09-22: 23,206,615 active2026-09-23: 23,228,484 active2026-09-24: 23,382,697 active2026-09-25: 23,425,362 active2026-09-26: 23,467,515 active2026-09-27: 23,494,711 active2026-09-28: 23,516,521 active2026-09-29: 23,553,657 active2026-09-30: 23,586,140 active2026-10-01: 23,621,315 active2026-10-02: 23,669,685 active2026-10-03: 23,702,247 active2026-10-04: 23,715,365 active2026-10-05: 23,709,199 active2026-10-06: 23,683,927 active2026-10-07: 23,654,138 active2026-10-08: 23,640,118 active2026-10-09: 23,655,120 active2026-10-10: 23,653,028 active2026-10-11: 23,664,638 active2026-10-12: 23,684,437 active2026-10-13: 23,729,803 active2026-10-14: 23,776,354 active2026-10-15: 23,821,463 active2025-06-302026-10-15

# y-axis starts at 7.59M, 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
▲ +3.39%
+780,695 domains
90 days
▲ +8.79%
+1,925,419 domains
1 year
▲ +65.10%
+9,392,935 domains
# intermediate CAs
Intermediate certificate authorities operating under Google Trust Services, with the number of active domains each currently secures.
intermediatecountrydomains
WR1United States21,571,996
WR3United States2,247,165
WR2United States1,288
WE2United States955
WR4-50
WE1United States9
WE5United States0
WE3United States0
WR5United States0
# faq
? How many domains does Google Trust Services secure?
Google Trust Services is the certificate authority for 23,821,463 active domains as of October 15, 2026 - 10.03% of every domain DNSniffer can attribute to an issuer.
? Is Google Trust Services gaining or losing market share?
The number of domains secured by Google Trust Services has grown by 65.10% over the last year (+9,392,935 domains).
? Which intermediate CAs does Google Trust Services sign from?
We have seen 9 intermediates under Google Trust Services, the busiest being “WR1” with 21,571,996 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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