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~/dnsniffer/issuers/european-organisation-for-the-safety-of-air-navigation·rank #163

▸ How many domains does European Organisation for the Safety of Air Navigation secure?

48

active domains whose current TLS certificate was issued by European Organisation for the Safety of Air Navigation, as of - 0.00% of all attributed domains.

# rank #163 of all CAs ▼ 33 in 30d# all records held: 105# subdomains: 0# intermediates: 1# Belgium
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~/issuers/european-organisation-for-the-safety-of-air-navigation/history·active domains
48
domains secured by European Organisation for the Safety of Air Navigation on 2026-10-14 · ▲ +26 (+118.18%) since 2025-06-30
10.3640.4370.5100.57130.642025-06-30: 22 active2025-07-31: 114 active2025-08-31: 114 active2025-09-30: 114 active2025-10-31: 114 active2025-11-30: 114 active2025-12-31: 114 active2026-01-31: 114 active2026-02-28: 114 active2026-03-31: 114 active2026-04-30: 116 active2026-05-31: 118 active2026-06-30: 118 active2026-07-31: 119 active2026-08-31: 119 active2026-09-01: 118 active2026-09-02: 118 active2026-09-03: 116 active2026-09-04: 116 active2026-09-05: 102 active2026-09-06: 100 active2026-09-07: 98 active2026-09-08: 98 active2026-09-09: 98 active2026-09-10: 98 active2026-09-11: 98 active2026-09-12: 100 active2026-09-13: 99 active2026-09-14: 99 active2026-09-15: 98 active2026-09-16: 101 active2026-09-17: 101 active2026-09-18: 100 active2026-09-19: 98 active2026-09-20: 96 active2026-09-21: 97 active2026-09-22: 97 active2026-09-23: 94 active2026-09-24: 97 active2026-09-25: 95 active2026-09-26: 94 active2026-09-27: 96 active2026-09-28: 55 active2026-09-29: 49 active2026-09-30: 45 active2026-10-01: 48 active2026-10-02: 48 active2026-10-03: 49 active2026-10-04: 49 active2026-10-05: 49 active2026-10-06: 47 active2026-10-07: 47 active2026-10-08: 48 active2026-10-09: 50 active2026-10-10: 50 active2026-10-11: 50 active2026-10-12: 49 active2026-10-13: 49 active2026-10-14: 48 active2025-06-302026-10-14

# y-axis starts at 10.36, 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
▼ -51.52%
-51 domains
90 days
▼ -59.32%
-70 domains
1 year
▼ -57.89%
-66 domains
# intermediate CAs
Intermediate certificate authorities operating under European Organisation for the Safety of Air Navigation, with the number of active domains each currently secures.
intermediatecountrydomains
HARICA OV TLS RSABelgium48
# faq
? How many domains does European Organisation for the Safety of Air Navigation secure?
European Organisation for the Safety of Air Navigation is the certificate authority for 48 active domains as of October 14, 2026 - 0.00% of every domain DNSniffer can attribute to an issuer.
? Is European Organisation for the Safety of Air Navigation gaining or losing market share?
The number of domains secured by European Organisation for the Safety of Air Navigation has shrunk by 57.89% over the last year (-66 domains).
? Which intermediate CAs does European Organisation for the Safety of Air Navigation sign from?
We have seen 1 intermediates under European Organisation for the Safety of Air Navigation, the busiest being “HARICA OV TLS RSA” with 48 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.
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