SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
gui-ju.com
SSL/TLS Certificate
SSL/TLS Certificate for gui-ju.com
Valid- Issued by (CA)
- Asseco Data Systems S.A.
- Subject
- gui-ju.com
- Valid from
- Jan 21, 2026
- Valid until
- Feb 20, 2027 (158 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 3CF87AD787FD2B663243CD82D64D547E
- SHA-256 fingerprint
- CD:88:1D:AC:39:B6:66:F5:26:DA:C6:B4:B1:9A:8B:02:60:E2:4D:D6:EE:B4:68:C4:BA:0D:D0:2B:46:D9:26:75
- Chain
- Certum DV TLS G2 R39 CA → Certum Trusted 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.
Never get surprised by gui-ju.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch gui-ju.com continuously, notifying you the moment anything moves across all three signals:
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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