SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
didac-jahr.ch
SSL/TLS Certificate
SSL/TLS Certificate for didac-jahr.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- 10schuljahr.ch
- Valid from
- Jun 5, 2026
- Valid until
- Sep 3, 2026 (40 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0575623D8E7E956E6A6A50DBB5B454403E43
- SHA-256 fingerprint
- 88:1F:F2:C7:F4:C0:CF:C3:53:14:C4:F2:3F:2B:60:E7:D5:AC:A9:3F:E8:3B:16:AB:A0:4E:D6:78:26:EA:52:61
- 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.
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Uptime
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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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