SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
rfid-basis.de
SSL/TLS Certificate
SSL/TLS Certificate for rfid-basis.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- rfid-basis.de
- Valid from
- Jul 26, 2026
- Valid until
- Oct 24, 2026 (36 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 0576D962AACB9422BBB21D5A2AD654AE4F9E
- SHA-256 fingerprint
- 86:E4:9C:F9:C6:4E:A5:EC:1D:A5:A7:44:E9:5A:EA:4E:57:5B:81:A2:B5:CE:37:90:08:0C:92:57:65:21:5D:2D
- Chain
- YR1 → Root YR → ISRG Root X1
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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