SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
cn-jiafang.com
SSL/TLS Certificate
SSL/TLS Certificate for cn-jiafang.com
Self-signed- Issued by (CA)
- Unknown
- Subject
- —
- Valid from
- Apr 29, 2025
- Valid until
- Apr 27, 2035 (3185 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0
- SHA-256 fingerprint
- 45:B2:83:03:4B:BD:61:1B:20:ED:C4:F4:8E:A0:8D:91:69:6C:0F:F3:D4:2A:A7:31:B8:D8:99:82:03:C4:03:58
- Chain
- —
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 5, 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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