SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
yijee.com
SSL/TLS Certificate
SSL/TLS Certificate for yijee.com
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- yijee.com
- Valid from
- Jan 29, 2026
- Valid until
- Apr 29, 2026 (expired 155 days ago)
- Public key
- RSA 2048-bit
- Serial
- 0567E029E590CEF015C312069276A5D6CC95
- SHA-256 fingerprint
- 9F:EE:71:AA:67:47:D2:E1:FA:40:70:61:BC:2B:6B:16:3D:2D:64:92:12:A6:F4:EE:1C:83:5F:69:1C:93:4F:27
- Chain
- R13 → 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
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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