SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sandra-smisek.de
SSL/TLS Certificate
SSL/TLS Certificate for sandra-smisek.de
Valid- Issued by (CA)
- Google Trust Services
- Subject
- sandra-smisek.de
- Valid from
- Jun 20, 2026
- Valid until
- Sep 18, 2026 (40 days remaining)
- Public key
- EC 256-bit
- Serial
- F934E292D1D68C820E61A096DC87F008
- SHA-256 fingerprint
- F7:9F:92:50:86:0A:08:44:45:02:0D:D3:E2:FC:6E:18:43:DB:5C:FE:8C:11:6B:3B:EA:48:0E:6D:AC:46:DE:5A
- Chain
- WE1 → GTS Root R4
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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