dnsniffer.com
sign inget started→
~/dnsniffer/issuers/perfectssl·rank #33

▸ How many domains does PerfectSSL secure?

16,908

active domains whose current TLS certificate was issued by PerfectSSL, as of - 0.01% of all attributed domains.

# rank #33 of all CAs ▼ 1 in 30d# all records held: 17,176# subdomains: 0# intermediates: 1
search domains download the certificate dataset
~/issuers/perfectssl/history·active domains
16,908
domains secured by PerfectSSL on 2026-10-15 · ▲ +12,509 (+284.36%) since 2025-06-30
2.9K6.8K10.7K14.5K18.4K2025-06-30: 4,399 active2025-07-31: 13,791 active2025-08-31: 13,844 active2025-09-30: 13,850 active2025-10-31: 13,850 active2025-11-30: 13,850 active2025-12-31: 14,549 active2026-01-31: 14,849 active2026-02-28: 14,849 active2026-03-31: 14,849 active2026-04-30: 15,197 active2026-05-31: 15,315 active2026-06-30: 15,408 active2026-07-31: 15,497 active2026-08-31: 15,497 active2026-09-01: 15,493 active2026-09-02: 15,557 active2026-09-03: 15,101 active2026-09-04: 15,131 active2026-09-05: 15,170 active2026-09-06: 15,167 active2026-09-07: 15,096 active2026-09-08: 15,171 active2026-09-09: 15,239 active2026-09-10: 15,287 active2026-09-11: 15,384 active2026-09-12: 15,417 active2026-09-13: 15,425 active2026-09-14: 15,427 active2026-09-15: 15,499 active2026-09-16: 15,572 active2026-09-17: 15,659 active2026-09-18: 15,732 active2026-09-19: 15,789 active2026-09-20: 15,788 active2026-09-21: 15,773 active2026-09-22: 15,846 active2026-09-23: 15,901 active2026-09-24: 16,462 active2026-09-25: 16,496 active2026-09-26: 16,547 active2026-09-27: 16,553 active2026-09-28: 16,539 active2026-09-29: 16,649 active2026-09-30: 16,657 active2026-10-01: 16,676 active2026-10-02: 16,751 active2026-10-03: 16,763 active2026-10-04: 16,754 active2026-10-05: 16,744 active2026-10-06: 16,773 active2026-10-07: 16,816 active2026-10-08: 16,834 active2026-10-09: 16,875 active2026-10-10: 16,876 active2026-10-11: 16,845 active2026-10-12: 16,833 active2026-10-13: 16,852 active2026-10-14: 16,876 active2026-10-15: 16,908 active2025-06-302026-10-15

# y-axis starts at 2.9K, 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
▲ +9.09%
+1,409 domains
90 days
▲ +9.74%
+1,500 domains
1 year
▲ +22.08%
+3,058 domains
# intermediate CAs
Intermediate certificate authorities operating under PerfectSSL, with the number of active domains each currently secures.
intermediatecountrydomains
PerfectSSL-16,908
# faq
? How many domains does PerfectSSL secure?
PerfectSSL is the certificate authority for 16,908 active domains as of October 15, 2026 - 0.01% of every domain DNSniffer can attribute to an issuer.
? Is PerfectSSL gaining or losing market share?
The number of domains secured by PerfectSSL has grown by 22.08% over the last year (+3,058 domains).
? Which intermediate CAs does PerfectSSL sign from?
We have seen 1 intermediates under PerfectSSL, the busiest being “PerfectSSL” with 16,908 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.
all CAs rankedfastest growingfastest decliningTLD rankingsbulk datasets