SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for uu.nl
Valid- Issued by (CA)
- Hellenic Academic and Research Institutions CA
- Subject
- uu.nl
- Valid from
- Jul 22, 2026
- Valid until
- Feb 6, 2027 (190 days remaining)
- Public key
- EC 256-bit
- Serial
- 5C455AB7F9D5BCC1E5289969699FF1B4
- SHA-256 fingerprint
- 04:BB:E0:09:95:DE:09:0C:F5:A1:C9:31:32:FC:44:EC:DC:E6:7E:13:78:D5:04:0A:29:17:E4:B4:0A:26:E3:65
- Chain
- GEANT TLS ECC 1 → HARICA TLS ECC Root CA 2021 → Hellenic Academic and Research Institutions ECC RootCA 2015
Certificate Authority Authorization (CAA)
CAA restricts issuance to digicert.com, harica.gr, letsencrypt.org, sectigo.com; we couldn't map the serving CA (Hellenic Academic and Research Institutions CA) to one of these identifiers.
This certificate has been served since Jul 27, 2026.
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Uptime
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DNS changes
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TLS certificate
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