SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-13-209-117-141.ap-northeast-2.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-13-209-117-141.ap-northeast-2.compute.amazonaws.com
Untrusted chain- Issued by (CA)
- Sectigo Limited
- Subject
- *.sls.or.kr
- Valid from
- Sep 18, 2025
- Valid until
- Oct 18, 2026 (82 days remaining)
- Public key
- RSA 2048-bit
- Serial
- DCB408C24D8A0765E3482AEF1E7F0FB1
- SHA-256 fingerprint
- 93:1C:D1:0D:4D:FF:8F:E8:60:BA:6F:97:84:40:4E:1A:12:5A:C9:F5:E8:7D:13:E0:AD:A5:B0:49:43:5A:84:6E
- Chain
- —
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by ec2-13-209-117-141.ap-northeast-2.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-13-209-117-141.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.