SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
gemag-online.de
SSL/TLS Certificate
SSL/TLS Certificate for gemag-online.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- gemag-online.de
- Valid from
- Sep 18, 2026
- Valid until
- Dec 17, 2026 (40 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05A4174C0F00569E7A574D9A49656D313632
- SHA-256 fingerprint
- EB:D6:9F:76:22:16:4F:50:8E:45:8A:35:56:BF:B9:84:C0:D9:B1:6B:2E:12:6A:1A:6A:F8:73:6D:AF:33:21:61
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by gemag-online.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch gemag-online.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, CNAME, TXT 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.