SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-16-163-139-40.ap-east-1.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-16-163-139-40.ap-east-1.compute.amazonaws.com
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- 62.sn779.com
- Valid from
- Jan 26, 2026
- Valid until
- Apr 26, 2026 (expired 88 days ago)
- Public key
- RSA 2048-bit
- Serial
- 05EA32D51C2CA1BE3DD72818B57BF0ED8866
- SHA-256 fingerprint
- 3E:55:62:34:EB:27:95:C4:EE:98:6E:C2:C4:DF:3C:89:AB:33:C2:BC:A7:00:DD:1C:A2:42:64:E9:EA:76:84:7E
- Chain
- R13 → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by ec2-16-163-139-40.ap-east-1.compute.amazonaws.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch ec2-16-163-139-40.ap-east-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.