SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
cseg-gsu.org
SSL/TLS Certificate
SSL/TLS Certificate for cseg-gsu.org
Valid- Issued by (CA)
- Amazon
- Subject
- *.cseg-gsu.org
- Valid from
- Dec 21, 2025
- Valid until
- Jan 19, 2027 (162 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 01E88A8F4DE185E96BDC80147F3CB7E4
- SHA-256 fingerprint
- 7C:C6:3E:F4:5E:C1:49:E7:DB:ED:0E:BF:0B:56:50:64:CC:EF:73:92:2C:BD:06:F1:9E:1B:43:C7:5F:9A:84:50
- Chain
- Amazon RSA 2048 M04 → Amazon Root CA 1 → Starfield Services Root Certificate Authority - G2
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 Jul 31, 2026.
Never get surprised by cseg-gsu.org's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch cseg-gsu.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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