SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
km-data.de
SSL/TLS Certificate
SSL/TLS Certificate for km-data.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- km-data.de
- Valid from
- Sep 12, 2026
- Valid until
- Dec 11, 2026 (72 days remaining)
- Public key
- EC 256-bit
- Serial
- 056CEDF7567B1458A268BA673F31BE5FFFF1
- SHA-256 fingerprint
- 36:D0:FB:4B:20:5E:48:FA:20:08:69:9E:04:7D:11:F1:69:F8:89:E2:A5:5D:C7:70:71:B9:99:DD:AF:A7:41:B5
- Chain
- YE2 → Root YE → ISRG Root X2 → ISRG Root X1
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 Sep 4, 2026.
Never get surprised by km-data.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch km-data.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, 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.