~/dnsniffer/issuers/isimtescil-bilisim-a-s·rank #44
$ dnsniffer count --issuer isimtescil-bilisim-a-s --active
▸ How many domains does Isimtescil Bilisim A.S secure?
5,865
active domains whose current TLS certificate was issued by Isimtescil Bilisim A.S, as of — 0.00% of all attributed domains.
# rank #44 of all CAs# all records held: 5,927# subdomains: 335# intermediates: 1# Türkiye
~/issuers/isimtescil-bilisim-a-s/history·active domains
5,865
domains secured by Isimtescil Bilisim A.S on 2026-08-31 · ▲ +3,434 (+141.26%) 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
▲ +0.00%
+0 domains
90 days
▲ +0.00%
+0 domains
1 year
▲ +34.46%
+1,503 domains
# intermediate CAs
| intermediate | country | domains |
|---|---|---|
| TrustSafe TLS RSA SubCA R1 | Türkiye | 5,865 |
# faq
- ? How many domains does Isimtescil Bilisim A.S secure?
- Isimtescil Bilisim A.S is the certificate authority for 5,865 active domains as of August 31, 2026 — 0.00% of every domain DNSniffer can attribute to an issuer.
- ? Is Isimtescil Bilisim A.S gaining or losing market share?
- The number of domains secured by Isimtescil Bilisim A.S has grown by 34.46% over the last year (+1,503 domains).
- ? Which intermediate CAs does Isimtescil Bilisim A.S sign from?
- We have seen 1 intermediate under Isimtescil Bilisim A.S, the busiest being “TrustSafe TLS RSA SubCA R1” with 5,865 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.