SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
zap-seminare.de
SSL/TLS Certificate
SSL/TLS Certificate for zap-seminare.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- www.zap-seminare.de
- Valid from
- Apr 13, 2026
- Valid until
- Oct 28, 2026 (79 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 0765191749181F51939439EACDD0D442
- SHA-256 fingerprint
- FD:D5:36:B8:53:B6:C9:B7:5B:B4:88:F4:3E:CC:E6:DF:9A:4C:76:1A:3A:6E:58:D4:1C:06:B7:39:6B:96:00:AC
- 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.
This certificate has been served since Aug 7, 2026.
Never get surprised by zap-seminare.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch zap-seminare.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.