SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
gateway-university.com
SSL/TLS Certificate
SSL/TLS Certificate for gateway-university.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- ng-university.org
- Valid from
- Oct 2, 2026
- Valid until
- Dec 31, 2026 (73 days remaining)
- Public key
- EC 384-bit
- Serial
- 060B7E21CCF662948A8C4A72AD68FEF16432
- SHA-256 fingerprint
- F9:71:46:D8:EB:52:BA:69:FF:87:01:D1:0B:AA:52:F1:29:42:4C:79:0D:7C:4C:AB:AB:B9:BC:A5:F7:7A:5B:9C
- Chain
- YE1 → Root YE → ISRG Root X2 → ISRG Root X1
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 Aug 18, 2026.
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This is today's certificate. Turn on monitoring and we'll watch gateway-university.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, CNAME, TXT 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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