dnsniffer.com
sign inget started→
~/dnsniffer/issuers/certsign-sa·rank #115

▸ How many domains does CERTSIGN SA secure?

205

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

# rank #115 of all CAs ▲ 2 in 30d# all records held: 205# subdomains: 0# intermediates: 1# Romania
search domains download the certificate dataset
~/issuers/certsign-sa/history·active domains
205
domains secured by CERTSIGN SA on 2026-10-15 · ▲ +168 (+454.05%) since 2025-06-30
16.7269.11121.5173.89226.282025-06-30: 37 active2025-07-31: 154 active2025-08-31: 155 active2025-09-30: 155 active2025-10-31: 155 active2025-11-30: 155 active2025-12-31: 156 active2026-01-31: 157 active2026-02-28: 157 active2026-03-31: 157 active2026-04-30: 159 active2026-05-31: 160 active2026-06-30: 160 active2026-07-31: 160 active2026-08-31: 160 active2026-09-01: 161 active2026-09-02: 163 active2026-09-03: 157 active2026-09-04: 160 active2026-09-05: 173 active2026-09-06: 167 active2026-09-07: 165 active2026-09-08: 167 active2026-09-09: 173 active2026-09-10: 172 active2026-09-11: 170 active2026-09-12: 171 active2026-09-13: 171 active2026-09-14: 167 active2026-09-15: 174 active2026-09-16: 175 active2026-09-17: 174 active2026-09-18: 170 active2026-09-19: 169 active2026-09-20: 167 active2026-09-21: 161 active2026-09-22: 159 active2026-09-23: 159 active2026-09-24: 162 active2026-09-25: 167 active2026-09-26: 164 active2026-09-27: 162 active2026-09-28: 161 active2026-09-29: 165 active2026-09-30: 172 active2026-10-01: 173 active2026-10-02: 171 active2026-10-03: 177 active2026-10-04: 176 active2026-10-05: 176 active2026-10-06: 185 active2026-10-07: 183 active2026-10-08: 186 active2026-10-09: 192 active2026-10-10: 204 active2026-10-11: 204 active2026-10-12: 201 active2026-10-13: 206 active2026-10-14: 204 active2026-10-15: 205 active2025-06-302026-10-15

# y-axis starts at 16.72, 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
▲ +17.82%
+31 domains
90 days
▲ +28.13%
+45 domains
1 year
▲ +32.26%
+50 domains
# intermediate CAs
Intermediate certificate authorities operating under CERTSIGN SA, with the number of active domains each currently secures.
intermediatecountrydomains
certSIGN Web CA G2Romania205
# faq
? How many domains does CERTSIGN SA secure?
CERTSIGN SA is the certificate authority for 205 active domains as of October 15, 2026 - 0.00% of every domain DNSniffer can attribute to an issuer.
? Is CERTSIGN SA gaining or losing market share?
The number of domains secured by CERTSIGN SA has grown by 32.26% over the last year (+50 domains).
? Which intermediate CAs does CERTSIGN SA sign from?
We have seen 1 intermediates under CERTSIGN SA, the busiest being “certSIGN Web CA G2” with 205 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