SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ug-san.de
SSL/TLS Certificate
SSL/TLS Certificate for ug-san.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- ug-san.de
- Valid from
- Jun 13, 2026
- Valid until
- Sep 11, 2026 (40 days remaining)
- Public key
- EC 256-bit
- Serial
- 060ED11D7CF790D72FDBDB4F1557E0B53772
- SHA-256 fingerprint
- DA:C8:30:0C:8A:F0:2A:D5:C6:23:C2:FA:06:39:EF:47:36:63:5B:E1:17:2D:32:60:4C:8C:EB:98:79:5D:EA:9C
- Chain
- YE1 → Root YE → ISRG Root X2 → 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 ug-san.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ug-san.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.