SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
zigma-jp.com
SSL/TLS Certificate
SSL/TLS Certificate for zigma-jp.com
Self-signed- Issued by (CA)
- srv19.swhc.ca
- Subject
- srv19.swhc.ca
- Valid from
- Oct 16, 2024
- Valid until
- Oct 16, 2025 (expired 325 days ago)
- Public key
- RSA 4096-bit
- Serial
- 41673BF28A0D0B5510D9621133CFE340D01B1EB8
- SHA-256 fingerprint
- 21:CC:58:83:F4:F3:23:87:1B:11:23:13:F1:89:BB:D4:39:9F:03:1A:89:52:CF:F0:78:D0:3E:87:8A:16:5D:BA
- Chain
- srv19.swhc.ca
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Aug 25, 2026.
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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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