SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
swissems.net
SSL/TLS Certificate
SSL/TLS Certificate for swissems.net
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- swissems.net
- Valid from
- Sep 21, 2026
- Valid until
- Dec 20, 2026 (75 days remaining)
- Public key
- EC 256-bit
- Serial
- 06E7CBD31C3C6B1335DF151F6DE78EE3F621
- SHA-256 fingerprint
- BC:35:7F:17:0C:99:98:FF:24:7C:BF:36:B0:78:65:89:7F:6A:7F:A6:49:8D:12:80:B3:63:96:3B:38:7E:15:6A
- 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.
This certificate has been served since Sep 30, 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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