SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
planet-school.de
SSL/TLS Certificate
SSL/TLS Certificate for planet-school.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- planet-school.de
- Valid from
- Oct 20, 2026
- Valid until
- Jan 18, 2027 (64 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 064FDC9236A148015544F9D1C0BBEB4EB41F
- SHA-256 fingerprint
- 98:B9:9F:51:26:93:0E:0B:7D:09:EE:60:36:5E:A9:E0:06:FF:75:A4:9A:71:14:EF:5D:85:F6:87:99:24:FB:80
- 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.
We've observed 1 previous certificate for this host. This certificate has been served since Oct 10, 2026.
Never get surprised by planet-school.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch planet-school.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.
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