SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for obk.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.obk.de
- Valid from
- Dec 17, 2025
- Valid until
- Jan 17, 2027 (168 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 7D66F08913282FA12B508750835194B6
- SHA-256 fingerprint
- 60:FB:0E:57:40:E0:7D:42:F1:6F:A5:6B:54:D5:FA:56:13:01:A1:A2:07:10:D9:42:96:E4:92:96:33:80:74:67
- 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.
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This is today's certificate. Turn on monitoring and we'll watch obk.de continuously, notifying you the moment anything moves across all three signals:
Uptime
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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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