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~/dnsniffer/issuers/the-usertrust-network·rank #49

▸ How many domains does The USERTRUST Network secure?

4,408

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

# rank #49 of all CAs# all records held: 6,156# subdomains: 434# intermediates: 2# United States
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~/issuers/the-usertrust-network/history·active domains
4,408
domains secured by The USERTRUST Network on 2026-10-15 · ▲ +4,063 (+1,177.68%) since 2025-06-30
01.7K3.3K5.0K6.7K2025-06-30: 345 active2025-07-31: 5,835 active2025-08-31: 5,856 active2025-09-30: 5,858 active2025-10-31: 5,858 active2025-11-30: 5,858 active2025-12-31: 5,974 active2026-01-31: 5,991 active2026-02-28: 5,991 active2026-03-31: 5,991 active2026-04-30: 5,991 active2026-05-31: 5,991 active2026-06-30: 5,991 active2026-07-31: 5,991 active2026-08-31: 5,991 active2026-09-01: 5,966 active2026-09-02: 5,939 active2026-09-03: 4,652 active2026-09-04: 4,037 active2026-09-05: 4,016 active2026-09-06: 3,997 active2026-09-07: 3,977 active2026-09-08: 3,949 active2026-09-09: 3,922 active2026-09-10: 3,897 active2026-09-11: 3,875 active2026-09-12: 3,851 active2026-09-13: 3,839 active2026-09-14: 3,811 active2026-09-15: 3,790 active2026-09-16: 3,757 active2026-09-17: 3,739 active2026-09-18: 3,713 active2026-09-19: 3,696 active2026-09-20: 3,680 active2026-09-21: 3,655 active2026-09-22: 3,635 active2026-09-23: 3,606 active2026-09-24: 4,953 active2026-09-25: 4,928 active2026-09-26: 4,908 active2026-09-27: 4,881 active2026-09-28: 4,850 active2026-09-29: 4,813 active2026-09-30: 4,777 active2026-10-01: 4,731 active2026-10-02: 4,696 active2026-10-03: 4,670 active2026-10-04: 4,650 active2026-10-05: 4,626 active2026-10-06: 4,598 active2026-10-07: 4,566 active2026-10-08: 4,541 active2026-10-09: 4,511 active2026-10-10: 4,492 active2026-10-11: 4,479 active2026-10-12: 4,460 active2026-10-13: 4,443 active2026-10-14: 4,426 active2026-10-15: 4,408 active2025-06-302026-10-15

# 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
▲ +16.31%
+618 domains
90 days
▼ -26.42%
-1,583 domains
1 year
▼ -24.75%
-1,450 domains
# intermediate CAs
Intermediate certificate authorities operating under The USERTRUST Network, with the number of active domains each currently secures.
intermediatecountrydomains
USERTrust RSA Domain Validation Secure Server CAUnited States4,377
USERTrust RSA Organization Validation Secure Server CAUnited States31
# faq
? How many domains does The USERTRUST Network secure?
The USERTRUST Network is the certificate authority for 4,408 active domains as of October 15, 2026 - 0.00% of every domain DNSniffer can attribute to an issuer.
? Is The USERTRUST Network gaining or losing market share?
The number of domains secured by The USERTRUST Network has shrunk by 24.75% over the last year (-1,450 domains).
? Which intermediate CAs does The USERTRUST Network sign from?
We have seen 2 intermediates under The USERTRUST Network, the busiest being “USERTrust RSA Domain Validation Secure Server CA” with 4,377 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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