SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
open-flair.de
SSL/TLS Certificate
SSL/TLS Certificate for open-flair.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- open-flair.de
- Valid from
- Aug 5, 2026
- Valid until
- Nov 3, 2026 (87 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 061DC142CCB1782CCEC2ED17E85462E7AA52
- SHA-256 fingerprint
- AC:3B:47:FA:A7:AD:F1:F9:A1:DC:93:12:64:7E:05:75:8C:3D:E6:B0:F6:4B:38:47:81:14:B4:34:10:63:92:97
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by open-flair.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch open-flair.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.
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