SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-54-79-26-106.ap-southeast-2.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-54-79-26-106.ap-southeast-2.compute.amazonaws.com
Hostname mismatch- Issued by (CA)
- Amazon
- Subject
- *.ultrasync.au
- Valid from
- Oct 27, 2026
- Valid until
- May 12, 2027 (180 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0CC45C47C540B3E1A3DA5470E8A796BA
- SHA-256 fingerprint
- 2F:14:95:06:37:8E:1F:63:9A:91:39:EF:DB:78:79:A1:87:F4:CA:E7:C4:A1:22:81:81:27:7E:78:18:56:F7:2D
- Chain
- Amazon RSA 2048 M04 → 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 ec2-54-79-26-106.ap-southeast-2.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-54-79-26-106.ap-southeast-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.