SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
dr-kleinmann.com
SSL/TLS Certificate
SSL/TLS Certificate for dr-kleinmann.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- dr-kleinmann.de
- Valid from
- Jul 9, 2026
- Valid until
- Oct 7, 2026 (71 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 051CEE4423ED35D17154F8EF4095F2AE4D0D
- SHA-256 fingerprint
- DA:13:7A:0E:E6:F1:41:F0:FE:B7:0D:A7:E0:CE:9A:32:5B:AF:0D:E1:7A:8A:68:A0:CE:1A:09:0F:E4:3B:4B:E8
- 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 dr-kleinmann.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch dr-kleinmann.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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