SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
engineering-teaching-research.com
SSL/TLS Certificate
SSL/TLS Certificate for engineering-teaching-research.com
Expired- Issued by (CA)
- Unizeto Technologies S.A.
- Subject
- engineering-teaching-research.com
- Valid from
- Nov 23, 2024
- Valid until
- Nov 23, 2025 (expired 301 days ago)
- Public key
- RSA 4096-bit
- Serial
- 728968E56EDD92F9E7B55C22172D5D35
- SHA-256 fingerprint
- 3F:31:7E:3E:DE:D3:F8:DF:8D:77:40:DE:19:BD:95:47:C7:5F:E3:8C:9E:B9:5D:1D:8E:2C:03:7F:C9:A5:02:C6
- Chain
- Certum Domain Validation CA SHA2 → 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 Sep 8, 2026.
Never get surprised by engineering-teaching-research.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch engineering-teaching-research.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.