SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
vtk-gmbh.de
SSL/TLS Certificate
SSL/TLS Certificate for vtk-gmbh.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.vtk-gmbh.de
- Valid from
- Dec 4, 2025
- Valid until
- Dec 18, 2026 (82 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 7B4282A60AD0773F779C6559B86A7C2B
- SHA-256 fingerprint
- 9E:BB:D8:EE:78:54:62:E1:42:C5:A2:85:A1:1F:CE:72:5E:23:AC:AF:BE:B1:96:3F:EA:C5:6A:17:60:6F:97:0B
- 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 vtk-gmbh.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch vtk-gmbh.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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