SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kr-datentechnik.de
SSL/TLS Certificate
SSL/TLS Certificate for kr-datentechnik.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- kr-datentechnik.de
- Valid from
- Sep 28, 2026
- Valid until
- Apr 14, 2027 (191 days remaining)
- Public key
- RSA 2048-bit
- Serial
- AB591A720E4AB965623D5B82E5920868
- SHA-256 fingerprint
- 36:30:EE:3A:46:24:3B:20:2D:E7:07:98:F3:CC:EE:B6:7D:91:4E:39:A0:F6:46:88:17:A7:63:CA:15:EB:D1:7D
- 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.
Never get surprised by kr-datentechnik.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch kr-datentechnik.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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