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
- Jul 15, 2026
- Valid until
- Oct 13, 2026 (39 days remaining)
- Public key
- EC 256-bit
- Serial
- 05D2D91CC73F8BDC645726B6CC343D16F4AA
- SHA-256 fingerprint
- 8A:15:5D:64:2C:44:F1:A8:57:3C:D5:DC:8F:E3:CF:FF:F2:65:BF:3A:CA:EA:A2:52:AC:77:B3:42:63:95:CA:5E
- Chain
- YE1 → 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.
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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.
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