SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
han-wu.com
SSL/TLS Certificate
SSL/TLS Certificate for han-wu.com
Valid- Issued by (CA)
- TrustAsia Technologies, Inc.
- Subject
- han-wu.com
- Valid from
- Aug 12, 2026
- Valid until
- Nov 10, 2026 (67 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 7D8D67CC6C04C8F3E6E215BBDF5E7E0755A76562
- SHA-256 fingerprint
- 28:8D:AF:D5:B1:44:4F:20:0D:3C:42:20:77:42:22:25:F7:6D:C4:0A:EB:A5:B7:E4:9E:12:C9:A3:8B:0F:57:76
- Chain
- TrustAsia DV TLS RSA CA 2024 → TrustAsia TLS RSA Root CA → Certum Trusted Network CA
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 Aug 11, 2026.
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Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
DNS changes
We watch NS, MX, CAA, DNSSEC, CNAME 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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