SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
bsz-bw.de
SSL/TLS Certificate
SSL/TLS Certificate for bsz-bw.de
Valid- Issued by (CA)
- Hellenic Academic and Research Institutions CA
- Subject
- www.bsz-bw.de
- Valid from
- Jul 28, 2026
- Valid until
- Feb 12, 2027 (93 days remaining)
- Public key
- EC 256-bit
- Serial
- 0DC1871554F786C80AC2BEEFA8CDB67D
- SHA-256 fingerprint
- C4:C0:CE:86:FB:6E:31:66:F2:17:09:67:3A:9A:41:0C:A9:EE:06:E2:CC:12:3F:5A:2B:9C:85:E1:86:C7:B7:F3
- 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 harica.gr; we couldn't map the serving CA (Hellenic Academic and Research Institutions CA) to one of these identifiers.
This certificate has been served since Oct 31, 2026.
Never get surprised by bsz-bw.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch bsz-bw.de continuously, notifying you the moment anything moves across all three signals:

Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
DNS changes
We watch NS, MX, CAA, CNAME, TXT 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.