SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
henning-sauer.com
SSL/TLS Certificate
SSL/TLS Certificate for henning-sauer.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- henning-sauer.com
- Valid from
- Sep 24, 2026
- Valid until
- Dec 23, 2026 (71 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0520258FB17CE773E47864B18992E1C4F43D
- SHA-256 fingerprint
- FD:7B:BD:85:35:27:CE:2F:B1:2A:FE:B8:1E:75:94:99:A5:F5:5D:78:0D:79:64:75:B1:8B:A7:75:E8:77:89:45
- 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 henning-sauer.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch henning-sauer.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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