SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-32-188-89-218.us-west-2.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-32-188-89-218.us-west-2.compute.amazonaws.com
Hostname mismatch- Issued by (CA)
- Amazon
- Subject
- flex.cell-4.prod.us-west-2.prod.connect.aws.a2z.com
- Valid from
- Aug 14, 2026
- Valid until
- Feb 28, 2027 (110 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 4068F17BA720FD14B9EE4F7426827BB8
- SHA-256 fingerprint
- 1D:17:73:76:A4:47:90:D5:7B:41:58:6B:0A:73:7B:91:2B:17:4B:B2:58:5D:28:C2:1F:93:F7:EC:B9:2F:FB:CF
- Chain
- Amazon RSA 2048 S18 → 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 ec2-32-188-89-218.us-west-2.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-32-188-89-218.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, 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.