SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kompendium-as.com
SSL/TLS Certificate
SSL/TLS Certificate for kompendium-as.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.kompendium-as.de
- Valid from
- Sep 21, 2026
- Valid until
- Dec 20, 2026 (64 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 068123C3E0ABAAF2D446E020D92BFBAD7B68
- SHA-256 fingerprint
- CD:07:8D:11:A7:65:8D:CE:65:B0:9B:16:CD:24:38:D0:96:E3:74:FD:B5:0E:9E:EC:91:32:34:93:0A:E0:0D:AB
- Chain
- YR2 → 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 kompendium-as.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch kompendium-as.com 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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