SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-47-128-86-140.ap-southeast-1.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-47-128-86-140.ap-southeast-1.compute.amazonaws.com
Hostname mismatch- Issued by (CA)
- Amazon
- Subject
- lernbag.com
- Valid from
- May 2, 2026
- Valid until
- Nov 15, 2026 (97 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0C183F4AA50DDD419BC2AD8051E5A007
- SHA-256 fingerprint
- 4C:25:AE:18:B3:E6:1E:8C:5E:0E:9D:15:0A:41:FC:67:F4:77:D9:6B:68:C2:94:8B:21:44:58:62:94:59:F5:B4
- 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 ec2-47-128-86-140.ap-southeast-1.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-47-128-86-140.ap-southeast-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.