SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-52-67-28-211.sa-east-1.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-52-67-28-211.sa-east-1.compute.amazonaws.com
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- unsada.edu.ar
- Valid from
- Jul 24, 2026
- Valid until
- Oct 22, 2026 (68 days remaining)
- Public key
- EC 256-bit
- Serial
- 0672EA4721914EF051369640B12614F4969C
- SHA-256 fingerprint
- 41:B5:72:4D:74:EA:53:AB:BC:6A:E3:E3:AD:79:B8:B1:32:CC:89:C2:9D:92:41:FF:38:8D:5A:2E:7C:0F:53:0F
- Chain
- YE2 → 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.
Never get surprised by ec2-52-67-28-211.sa-east-1.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-52-67-28-211.sa-east-1.compute.amazonaws.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.