SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
dk-office.de
SSL/TLS Certificate
SSL/TLS Certificate for dk-office.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- dk-office.de
- Valid from
- Dec 22, 2025
- Valid until
- Jan 12, 2027 (146 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 29880B9A21D157A78316622D53015E94
- SHA-256 fingerprint
- 02:DE:A8:AD:05:6E:C5:F9:D7:95:A1:52:28:82:6A:FC:35:45:2F:6C:B0:B9:1A:48:4C:85:BC:09:11:F4:6E:92
- 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 dk-office.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch dk-office.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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