SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
online-university.org
SSL/TLS Certificate
SSL/TLS Certificate for online-university.org
Valid- Issued by (CA)
- GoDaddy.com, Inc.
- Subject
- online-university.org
- Valid from
- Apr 4, 2026
- Valid until
- Oct 19, 2026 (67 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 5399B9FEE51881B9
- SHA-256 fingerprint
- 1A:20:F3:4E:2E:9C:81:4E:EE:89:80:FD:3A:BD:C4:07:89:58:AE:E7:7F:09:DD:96:CD:80:62:AE:93:9B:90:D4
- Chain
- Go Daddy Secure Certificate Authority - G2 → Go Daddy Root Certificate Authority - G2
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by online-university.org's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch online-university.org 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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