SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
your-uni.com
SSL/TLS Certificate
SSL/TLS Certificate for your-uni.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- *.your-uni.com
- Valid from
- Aug 7, 2026
- Valid until
- Nov 5, 2026 (60 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05506506EE2291DE0EEB06A84B0A9CF7A428
- SHA-256 fingerprint
- B3:4F:26:DD:B3:61:26:A6:3E:51:14:71:94:43:3B:6D:F9:26:CB:4B:B7:E4:6C:6F:D6:FB:CE:A2:17:6A:E9:C8
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by your-uni.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch your-uni.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.