SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
gdi-sh.de
SSL/TLS Certificate
SSL/TLS Certificate for gdi-sh.de
Valid- Issued by (CA)
- D-Trust GmbH
- Subject
- gdi-sh.de
- Valid from
- Aug 14, 2026
- Valid until
- Feb 28, 2027 (171 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 672B61FDB84A05073D6522ED6AC9F7886217B076
- SHA-256 fingerprint
- 53:14:2C:8F:0D:3C:21:B0:07:B4:6A:F7:D8:FE:C8:E6:07:3E:D0:AD:08:56:BB:89:B9:D8:A2:BB:AD:29:0F:AC
- Chain
- D-TRUST BR CA 2-23-1 2023 → D-TRUST BR Root CA 2 2023 → D-TRUST Root Class 3 CA 2 2009
Certificate Authority Authorization (CAA)
CAA restricts issuance to d-trust.net, letsencrypt.org; we couldn't map the serving CA (D-Trust GmbH) to one of these identifiers.
Never get surprised by gdi-sh.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch gdi-sh.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.