SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-44-228-157-224.us-west-2.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-44-228-157-224.us-west-2.compute.amazonaws.com
Hostname mismatch- Issued by (CA)
- Amazon
- Subject
- *.prod-wos.com
- Valid from
- Apr 8, 2026
- Valid until
- Oct 22, 2026 (92 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0809D5DDA20A045978F2E6EA5DFF678A
- SHA-256 fingerprint
- 95:DE:BC:19:0D:0F:AF:F0:B9:22:FC:80:C9:37:41:6C:A3:2E:C3:6A:0E:DE:35:74:05:8C:65:14:CB:6A:14:5E
- Chain
- Amazon RSA 2048 M01 → 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.
Never get surprised by ec2-44-228-157-224.us-west-2.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-44-228-157-224.us-west-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, 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.