SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-18-178-70-252.ap-northeast-1.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-18-178-70-252.ap-northeast-1.compute.amazonaws.com
Hostname mismatch- Issued by (CA)
- Amazon
- Subject
- www.my-pharm.ac.jp
- Valid from
- Sep 30, 2025
- Valid until
- Oct 29, 2026 (76 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 053ADBAC87D07F408DAB8C38EF63EC86
- SHA-256 fingerprint
- 21:A5:F9:AD:C5:75:E3:6B:F9:91:46:30:3F:CC:21:FC:53:F7:B3:80:E5:CC:5E:4F:23:91:34:C8:12:44:F5:80
- 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 ec2-18-178-70-252.ap-northeast-1.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-18-178-70-252.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.