SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sfera.one
SSL/TLS Certificate
SSL/TLS Certificate for sfera.one
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- sfera.one
- Valid from
- Aug 17, 2026
- Valid until
- Nov 15, 2026 (59 days remaining)
- Public key
- EC 256-bit
- Serial
- 056933A7FC9FC1251C2B56BADF9B4EE1811B
- SHA-256 fingerprint
- 41:CE:5E:CA:F8:CE:6B:16:6E:72:94:2C:45:8B:AB:DA:8E:7A:B9:10:33:F0:6E:6C:42:4D:6F:31:7D:97:BA:E2
- Chain
- YE2 → 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 14, 2026.
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Uptime
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DNS changes
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TLS certificate
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