~/dnsniffer/issuers/deutsche-telekom-security·rank #81
$ dnsniffer count --issuer deutsche-telekom-security --active
▸ How many domains does Deutsche Telekom Security secure?
1,353
active domains whose current TLS certificate was issued by Deutsche Telekom Security, as of — 0.00% of all attributed domains.
# rank #81 of all CAs# all records held: 1,394# subdomains: 799# intermediates: 12# Germany
~/issuers/deutsche-telekom-security/history·active domains
1,353
domains secured by Deutsche Telekom Security on 2026-08-31 · ▲ +663 (+96.09%) since 2025-06-30
# y-axis starts at 610.44, 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
▲ +0.37%
+5 domains
1 year
▲ +6.96%
+88 domains
# intermediate CAs
| intermediate | country | domains |
|---|---|---|
| Telekom Security ServerID OV Class 2 CA | Germany | 684 |
| Telekom Security OV RSA CA 26A | Germany | 437 |
| TeleSec Business TLS-CA 2022 | Germany | 98 |
| Telekom Security OV RSA CA 26B | Germany | 76 |
| Telekom Security DV RSA CA 24 | Germany | 38 |
| Telekom Security OV RSA CA 24 | Germany | 14 |
| Telekom Security DV RSA CA 22 | Germany | 3 |
| Telekom Security ServerID EV Class 3 CA | Germany | 2 |
| Telekom Security OV RSA CA 22 | Germany | 1 |
| Telekom Security OV qualified CA 25 | Germany | 0 |
| Telekom Security OV RSA qualified CA 25 | Germany | 0 |
| Telekom Security EV RSA CA 23 | Germany | 0 |
# faq
- ? How many domains does Deutsche Telekom Security secure?
- Deutsche Telekom Security is the certificate authority for 1,353 active domains as of August 31, 2026 — 0.00% of every domain DNSniffer can attribute to an issuer.
- ? Is Deutsche Telekom Security gaining or losing market share?
- The number of domains secured by Deutsche Telekom Security has grown by 6.96% over the last year (+88 domains).
- ? Which intermediate CAs does Deutsche Telekom Security sign from?
- We have seen 12 intermediates under Deutsche Telekom Security, the busiest being “Telekom Security ServerID OV Class 2 CA” with 684 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.