SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
nerdnet.com.au
SSL/TLS Certificate
SSL/TLS Certificate for nerdnet.com.au
Self-signed- Issued by (CA)
- web7.zetta.net.au
- Subject
- web7.zetta.net.au
- Valid from
- May 19, 2023
- Valid until
- May 18, 2024 (expired 796 days ago)
- Public key
- RSA 4096-bit
- Serial
- 3BDF54264FFA85BCF328CEB2BECA8B0268AE8B60
- SHA-256 fingerprint
- 13:21:65:28:D3:02:4C:7C:E4:3A:8A:9E:B4:B1:84:C7:A5:FC:64:79:87:17:01:6B:2F:D6:92:F9:B4:0C:F8:8C
- Chain
- web7.zetta.net.au
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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