SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for san-t.de
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- santiv.de
- Valid from
- Jun 20, 2026
- Valid until
- Sep 18, 2026 (45 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05DCAB170B496F6218AACEFFD5F51940080D
- SHA-256 fingerprint
- A3:2C:A1:E0:2E:DA:2A:9A:BE:E6:15:F2:7A:17:10:F9:E7:08:46:33:AC:AD:D5:03:32:EC:CD:F6:D6:0D:90:47
- Chain
- YR2 → 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 san-t.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch san-t.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.
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