SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-3-39-1-53.ap-northeast-2.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-3-39-1-53.ap-northeast-2.compute.amazonaws.com
Hostname mismatch- Issued by (CA)
- GlobalSign nv-sa
- Subject
- www.g2bplus.kr
- Valid from
- Sep 3, 2025
- Valid until
- Oct 5, 2026 (72 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 6B2DBF4FC551B30669B16F45
- SHA-256 fingerprint
- D9:8C:6C:DB:75:16:FA:E3:88:F9:E2:CF:67:F8:6B:03:5D:C2:0A:9B:27:AC:32:1C:FC:FC:13:2A:F6:02:DA:FA
- Chain
- GlobalSign GCC R6 AlphaSSL CA 2025 → GlobalSign → GlobalSign
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by ec2-3-39-1-53.ap-northeast-2.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-3-39-1-53.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.