SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-13-159-9-78.ap-northeast-1.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-13-159-9-78.ap-northeast-1.compute.amazonaws.com
Hostname mismatch- Issued by (CA)
- Amazon
- Subject
- *.sega.jp
- Valid from
- Apr 11, 2026
- Valid until
- Oct 25, 2026 (80 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0E2AE6AD4EC91820659E4BA967D17C94
- SHA-256 fingerprint
- 5B:D8:E7:47:A8:F7:2A:AF:31:BC:BB:51:7C:56:79:4F:56:0E:4F:63:E0:87:DC:90:A8:2A:1D:6D:33:07:FF:7C
- 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 ec2-13-159-9-78.ap-northeast-1.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-13-159-9-78.ap-northeast-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.