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~/dnsniffer/issuers/certera·rank #61

▸ How many domains does Certera secure?

3,175

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

# rank #61 of all CAs ▼ 2 in 30d# all records held: 3,323# subdomains: 179# intermediates: 4# United States
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~/issuers/certera/history·active domains
3,175
domains secured by Certera on 2026-10-15 · ▲ +2,252 (+243.99%) since 2025-06-30
652.161.4K2.1K2.8K3.5K2025-06-30: 923 active2025-07-31: 2,462 active2025-08-31: 2,473 active2025-09-30: 2,477 active2025-10-31: 2,477 active2025-11-30: 2,477 active2025-12-31: 2,782 active2026-01-31: 2,834 active2026-02-28: 2,834 active2026-03-31: 2,834 active2026-04-30: 3,031 active2026-05-31: 3,098 active2026-06-30: 3,121 active2026-07-31: 3,134 active2026-08-31: 3,134 active2026-09-01: 3,130 active2026-09-02: 3,129 active2026-09-03: 3,018 active2026-09-04: 2,913 active2026-09-05: 2,913 active2026-09-06: 2,908 active2026-09-07: 2,909 active2026-09-08: 2,910 active2026-09-09: 2,925 active2026-09-10: 2,927 active2026-09-11: 2,935 active2026-09-12: 2,942 active2026-09-13: 2,935 active2026-09-14: 2,927 active2026-09-15: 2,925 active2026-09-16: 2,925 active2026-09-17: 2,927 active2026-09-18: 2,930 active2026-09-19: 2,935 active2026-09-20: 2,924 active2026-09-21: 2,918 active2026-09-22: 2,929 active2026-09-23: 2,930 active2026-09-24: 3,161 active2026-09-25: 3,162 active2026-09-26: 3,167 active2026-09-27: 3,164 active2026-09-28: 3,163 active2026-09-29: 3,165 active2026-09-30: 3,169 active2026-10-01: 3,169 active2026-10-02: 3,176 active2026-10-03: 3,180 active2026-10-04: 3,172 active2026-10-05: 3,167 active2026-10-06: 3,165 active2026-10-07: 3,170 active2026-10-08: 3,174 active2026-10-09: 3,170 active2026-10-10: 3,174 active2026-10-11: 3,168 active2026-10-12: 3,159 active2026-10-13: 3,163 active2026-10-14: 3,162 active2026-10-15: 3,175 active2025-06-302026-10-15

# y-axis starts at 652.16, 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
▲ +8.55%
+250 domains
90 days
▲ +1.73%
+54 domains
1 year
▲ +28.18%
+698 domains
# intermediate CAs
Intermediate certificate authorities operating under Certera, with the number of active domains each currently secures.
intermediatecountrydomains
Certera RSA DV SSL CA 2United States2,508
Certera DV SSL CAUnited States667
Certera OV SSL CAUnited States0
Certera RSA OV SSL CA 2United States0
# faq
? How many domains does Certera secure?
Certera is the certificate authority for 3,175 active domains as of October 15, 2026 - 0.00% of every domain DNSniffer can attribute to an issuer.
? Is Certera gaining or losing market share?
The number of domains secured by Certera has grown by 28.18% over the last year (+698 domains).
? Which intermediate CAs does Certera sign from?
We have seen 4 intermediates under Certera, the busiest being “Certera RSA DV SSL CA 2” with 2,508 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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