SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
hfbk-hamburg.de
SSL/TLS Certificate
SSL/TLS Certificate for hfbk-hamburg.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- hfbk-hamburg.de
- Valid from
- Sep 17, 2026
- Valid until
- Dec 16, 2026 (71 days remaining)
- Public key
- EC 384-bit
- Serial
- 06D575A111FE64478E819D380DB39E99993D
- SHA-256 fingerprint
- 0F:52:23:76:0B:9A:E4:39:D0:42:E7:56:93:06:26:27:33:2C:8D:CA:F0:52:88:A0:AF:32:D0:7A:C7:C5:F2:C2
- Chain
- YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
We've observed 1 previous certificate for this host. This certificate has been served since Sep 28, 2026.
Never get surprised by hfbk-hamburg.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch hfbk-hamburg.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, 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.