SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
airport.lu
SSL/TLS Certificate
SSL/TLS Certificate for airport.lu
Hostname mismatch- Issued by (CA)
- Hellenic Academic and Research Institutions CA
- Subject
- *.public.lu
- Valid from
- Sep 8, 2025
- Valid until
- Sep 8, 2026 (47 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 0C8FFFAD203996480B9A57EC15B56D6F
- SHA-256 fingerprint
- A3:4D:38:87:00:B6:8B:19:71:C3:BE:75:27:AD:74:98:D1:89:D5:5E:B9:2F:77:24:48:D8:0A:86:B8:22:9D:14
- Chain
- GEANT TLS RSA 1 → HARICA TLS RSA Root CA 2021 → Hellenic Academic and Research Institutions RootCA 2015
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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Uptime
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DNS changes
We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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