SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-52-79-88-117.ap-northeast-2.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-52-79-88-117.ap-northeast-2.compute.amazonaws.com
Hostname mismatch- Issued by (CA)
- Sectigo Limited
- Subject
- *.kleague.com
- Valid from
- Jan 2, 2026
- Valid until
- Feb 1, 2027 (178 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 437B56C5561E33D94091598E409BD4D0
- SHA-256 fingerprint
- CD:A5:20:A4:73:DA:01:9C:B8:AE:4C:64:8A:83:CF:AF:BB:82:24:51:B4:CE:DE:2D:BC:77:89:9B:08:6D:CC:D7
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by ec2-52-79-88-117.ap-northeast-2.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-52-79-88-117.ap-northeast-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, 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.