~/dnsniffer/issuers/corporation-service-company·rank #49
$ dnsniffer count --issuer corporation-service-company --active
▸ How many domains does Corporation Service Company secure?
4,566
active domains whose current TLS certificate was issued by Corporation Service Company, as of — 0.00% of all attributed domains.
# rank #49 of all CAs# all records held: 4,681# subdomains: 107# intermediates: 4# United States
~/issuers/corporation-service-company/history·active domains
4,566
domains secured by Corporation Service Company on 2026-08-31 · ▲ +2,465 (+117.33%) since 2025-06-30
# y-axis starts at 2K, 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
▲ +0.04%
+2 domains
90 days
▲ +0.57%
+26 domains
1 year
▲ +5.77%
+249 domains
# intermediate CAs
| intermediate | country | domains |
|---|---|---|
| Corporation Service Company RSA OV SSL CA 2 | United States | 2,544 |
| Corporation Service Company RSA DV SSL CA 2 | United States | 948 |
| Corporation Service Company RSA OV SSL CA | United States | 837 |
| Trusted Secure Certificate Authority DV | United States | 237 |
# faq
- ? How many domains does Corporation Service Company secure?
- Corporation Service Company is the certificate authority for 4,566 active domains as of August 31, 2026 — 0.00% of every domain DNSniffer can attribute to an issuer.
- ? Is Corporation Service Company gaining or losing market share?
- The number of domains secured by Corporation Service Company has grown by 5.77% over the last year (+249 domains).
- ? Which intermediate CAs does Corporation Service Company sign from?
- We have seen 4 intermediates under Corporation Service Company, the busiest being “Corporation Service Company RSA OV SSL CA 2” with 2,544 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.