SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
dr-stiftung.org
SSL/TLS Certificate
SSL/TLS Certificate for dr-stiftung.org
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.dehne-ruge.de
- Valid from
- Sep 19, 2026
- Valid until
- Dec 18, 2026 (72 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 064635177C0EEF98C246B4BB587331619635
- SHA-256 fingerprint
- 58:2B:21:03:AB:E1:1B:F5:C2:23:98:43:3C:43:BF:11:52:B6:29:85:FA:63:02:85:2B:67:5B:AE:CD:A2:A8:A9
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).
We've observed 1 previous certificate for this host. This certificate has been served since Sep 26, 2026.
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Uptime
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DNS changes
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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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