SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
zihang-wei.uk
SSL/TLS Certificate
SSL/TLS Certificate for zihang-wei.uk
Valid- Issued by (CA)
- Google Trust Services
- Subject
- zihang-wei.uk
- Valid from
- Oct 25, 2026
- Valid until
- Jan 23, 2027 (77 days remaining)
- Public key
- EC 256-bit
- Serial
- 215447F29CEFB2550E06573AEF696E4F
- SHA-256 fingerprint
- CA:34:22:44:C4:17:41:EC:12:EA:3B:13:9A:1A:03:EB:A9:B0:70:ED:5A:71:FA:D2:88:79:93:F0:3C:D9:36:B0
- Chain
- WE1 → GTS Root R4
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 12, 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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