SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-52-193-151-227.ap-northeast-1.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-52-193-151-227.ap-northeast-1.compute.amazonaws.com
Hostname mismatch- Issued by (CA)
- DigiCert Inc
- Subject
- www.andus.co.jp
- Valid from
- Jan 17, 2026
- Valid until
- Jan 29, 2027 (179 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 08102F73998D1CE0E772976560A76743
- SHA-256 fingerprint
- 12:08:4C:AA:15:12:A0:74:75:E3:06:33:D6:8E:03:04:16:DF:8D:E7:DF:7B:E8:90:97:63:DB:84:7A:86:21:3A
- Chain
- RapidSSL TLS RSA CA G1 → DigiCert Global Root G2
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by ec2-52-193-151-227.ap-northeast-1.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-52-193-151-227.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.