SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-52-220-79-182.ap-southeast-1.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-52-220-79-182.ap-southeast-1.compute.amazonaws.com
Hostname mismatch- Issued by (CA)
- Amazon
- Subject
- *.73a0oncosu9k2.ap-southeast-1.cs.amazonlightsail.com
- Valid from
- Oct 18, 2026
- Valid until
- May 3, 2027 (178 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06B81A0FC683A562EDB668BE6276139F
- SHA-256 fingerprint
- 84:C2:2E:33:CD:F0:E7:A6:54:BA:FF:4B:E4:1B:AE:C4:14:24:C6:61:A4:A8:94:CF:93:41:50:22:40:DF:81:25
- 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 ec2-52-220-79-182.ap-southeast-1.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-52-220-79-182.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, 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.