SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
thedoor-jena.de
SSL/TLS Certificate
SSL/TLS Certificate for thedoor-jena.de
Valid- Issued by (CA)
- Google Trust Services
- Subject
- thedoor-jena.de
- Valid from
- Oct 24, 2026
- Valid until
- Jan 22, 2027 (78 days remaining)
- Public key
- EC 256-bit
- Serial
- E6D38D51C96B815F13F81E0DE545FC1F
- SHA-256 fingerprint
- 30:5D:60:71:C9:70:67:BE:D9:FF:2D:14:DA:F9:3B:46:B4:67:E9:E6:F3:7B:36:90:EA:0E:20:D1:49:EB:85:79
- 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 thedoor-jena.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch thedoor-jena.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.