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 d-gen.de
Valid- Issued by (CA)
- Google Trust Services
- Subject
- d-gen.de
- Valid from
- Jul 31, 2026
- Valid until
- Oct 29, 2026 (30 days remaining)
- Public key
- EC 256-bit
- Serial
- F6F28B5334CB74C30EC3AA88590938FA
- SHA-256 fingerprint
- FB:35:28:25:1D:BC:87:EB:A0:A5:B7:0A:3D:E5:05:EE:80:DD:8E:3A:9B:92:08:5E:4E:DD:BD:3E:B3:6C:FA:88
- Chain
- WE1 → GTS Root R4
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by d-gen.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch d-gen.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.