SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sit-syndicat.ch
SSL/TLS Certificate
SSL/TLS Certificate for sit-syndicat.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- dev.sitsyndicat.ch
- Valid from
- Jun 30, 2026
- Valid until
- Sep 28, 2026 (49 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 059FAD2741DCE54F482E927A4A49B9E2C790
- SHA-256 fingerprint
- 58:CA:72:59:C1:64:AD:05:82:58:79:6A:6E:08:5B:4A:30:F5:6A:18:B5:6D:A8:E6:E3:52:21:12:74:D2:8E:9C
- 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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