SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for de-sa.de
Self-signed- Issued by (CA)
- de-sa.de.df-66477.dummy
- Subject
- de-sa.de.df-66477.dummy
- Valid from
- Aug 8, 2025
- Valid until
- Aug 8, 2026 (expired 53 days ago)
- Public key
- RSA 2048-bit
- Serial
- 023F252A98
- SHA-256 fingerprint
- 19:5F:34:A5:9C:03:C6:53:CF:C4:6F:FD:42:14:FA:D6:EA:99:71:53:80:ED:FA:7A:5C:E7:8C:B4:04:13:3D:FD
- Chain
- de-sa.de.df-66477.dummy
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 Jul 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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