SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
oktagon.sg
SSL/TLS Certificate
SSL/TLS Certificate for oktagon.sg
Self-signed- Issued by (CA)
- oktagon.sg
- Subject
- oktagon.sg
- Valid from
- Oct 24, 2017
- Valid until
- Oct 24, 2018 (expired 2878 days ago)
- Public key
- RSA 2048-bit
- Serial
- 661FEE80
- SHA-256 fingerprint
- 51:2E:7D:18:38:8B:5B:9E:87:CC:3C:05:43:EC:8B:20:E8:ED:69:B8:4D:EA:BD:22:18:3B:C9:D4:D2:75:16:A6
- Chain
- oktagon.sg
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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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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