SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
yks-fb.com.tw
SSL/TLS Certificate
SSL/TLS Certificate for yks-fb.com.tw
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- *.yks-fb.com.tw
- Valid from
- Sep 27, 2026
- Valid until
- Dec 26, 2026 (50 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 061026749B6AE4F6250864F6BF903164D2CC
- SHA-256 fingerprint
- 09:B0:F1:C9:AA:6F:F9:66:08:15:48:C8:36:E2:C7:88:E5:F1:8F:F9:E8:C8:7D:DA:F0:69:EC:23:8F:DE:EB:2F
- Chain
- YR2 → Root YR → 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 Oct 10, 2026.
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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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