~/dnsniffer/issuers/esk-po-ta·rank #138
▸ How many domains does Äeská poÅ¡ta secure?
83
active domains whose current TLS certificate was issued by Äeská poÅ¡ta, as of - 0.00% of all attributed domains.
# rank #138 of all CAs ▲ 14 in 30d# all records held: 84# subdomains: 272# intermediates: 1# Czechia
~/issuers/esk-po-ta/history·active domains
83
domains secured by Äeská poÅ¡ta on 2026-10-15 · ▲ +48 (+137.14%) since 2025-06-30
# y-axis starts at 29.24, 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
▲ +40.68%
+24 domains
90 days
▲ +29.69%
+19 domains
1 year
▲ +33.87%
+21 domains
# intermediate CAs
| intermediate | country | domains |
|---|---|---|
| PostSignum Public CA 5 | Czechia | 83 |
# faq
- ? How many domains does Äeská poÅ¡ta secure?
- Äeská poÅ¡ta is the certificate authority for 83 active domains as of October 15, 2026 - 0.00% of every domain DNSniffer can attribute to an issuer.
- ? Is Äeská poÅ¡ta gaining or losing market share?
- The number of domains secured by Äeská poÅ¡ta has grown by 33.87% over the last year (+21 domains).
- ? Which intermediate CAs does Äeská poÅ¡ta sign from?
- We have seen 1 intermediates under Äeská poÅ¡ta, the busiest being “PostSignum Public CA 5” with 83 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.