SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-3-23-238-35.us-east-2.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-3-23-238-35.us-east-2.compute.amazonaws.com
Self-signed- Issued by (CA)
- TRAEFIK DEFAULT CERT
- Subject
- TRAEFIK DEFAULT CERT
- Valid from
- Nov 13, 2026
- Valid until
- Nov 13, 2027 (364 days remaining)
- Public key
- RSA 2048-bit
- Serial
- E1965E639D1ECFBC961D3BC33EADF108
- SHA-256 fingerprint
- C9:18:A4:7F:4E:58:4C:3D:28:C7:C7:5B:03:F3:FC:03:45:E0:46:E8:09:FC:76:29:2D:0F:17:A2:D6:2E:16:10
- Chain
- —
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by ec2-3-23-238-35.us-east-2.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-3-23-238-35.us-east-2.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, 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.