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 f7r.de
Valid- Issued by (CA)
- ZeroSSL GmbH
- Subject
- f7r.de
- Valid from
- Aug 17, 2026
- Valid until
- Nov 15, 2026 (89 days remaining)
- Public key
- EC 256-bit
- Serial
- 05F1BE249F5E1B42A57C56AA0DBF4D44
- SHA-256 fingerprint
- 25:25:E0:61:D2:4F:AB:04:0F:7C:76:ED:CE:37:88:CA:BF:F5:83:94:08:FB:62:5F:F5:A7:EE:9A:AE:4D:EC:1D
- Chain
- ZeroSSL ECC DV SSL CA 2 → Sectigo Public Server Authentication Root E46
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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