SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ec2-13-159-144-56.ap-northeast-1.compute.amazonaws.com
SSL/TLS Certificate
SSL/TLS Certificate for ec2-13-159-144-56.ap-northeast-1.compute.amazonaws.com
Self-signed- Issued by (CA)
- Unspecified
- Subject
- ip-172-31-18-85.ap-northeast-1.compute.internal
- Valid from
- Oct 21, 2025
- Valid until
- Oct 21, 2026 (81 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 790FB563C9AEB588
- SHA-256 fingerprint
- D5:90:70:1D:23:A0:7E:31:42:58:AB:A4:01:11:E9:BE:F9:0D:29:36:63:B5:5B:29:C6:75:4D:B2:FC:F1:29:C0
- Chain
- ip-172-31-18-85.ap-northeast-1.compute.internal
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by ec2-13-159-144-56.ap-northeast-1.compute.amazonaws.com's certificate expiring
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Uptime
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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.
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