SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sao20.win
SSL/TLS Certificate
SSL/TLS Certificate for sao20.win
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- sao20.win
- Valid from
- Oct 13, 2026
- Valid until
- Jan 11, 2027 (70 days remaining)
- Public key
- EC 256-bit
- Serial
- 066D6F73EB12BF425F436D4E1E6F78A76C7F
- SHA-256 fingerprint
- 68:EA:71:5D:5E:CB:24:C1:4F:F8:79:CF:73:53:B5:E8:95:C3:C3:51:B9:83:4D:C8:B8:5C:61:C2:37:CE:D2:AD
- 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.
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Uptime
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DNS changes
We watch NS, MX, CAA, CNAME, TXT 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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