SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-52-69-53-192.ap-northeast-1.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-52-69-53-192.ap-northeast-1.compute.amazonaws.com
Hostname mismatch- Issued by (CA)
- Amazon
- Subject
- *.hatena.ne.jp
- Valid from
- Mar 22, 2026
- Valid until
- Oct 5, 2026 (74 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05007EA7A6B159C8D04758F253ED6B9A
- SHA-256 fingerprint
- 50:EA:B7:C8:F6:DC:71:13:B3:F7:B1:75:C4:4A:82:21:70:65:F6:FD:A2:7A:89:75:39:08:39:8B:57:9B:61:86
- 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 ec2-52-69-53-192.ap-northeast-1.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-52-69-53-192.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.