SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
luett-deern.de
SSL/TLS Certificate
SSL/TLS Certificate for luett-deern.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- luett-deern.de
- Valid from
- May 31, 2026
- Valid until
- Dec 15, 2026 (54 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 13983CBBA5B3AA38882C186831584866
- SHA-256 fingerprint
- 79:42:6D:37:67:78:D3:97:84:9E:37:85:6D:40:93:61:E6:A3:69:02:F9:3A:CF:26:41:A1:89:80:26:6B:78:76
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Oct 9, 2026.
Never get surprised by luett-deern.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch luett-deern.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.