SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
airport-ksf.com
SSL/TLS Certificate
SSL/TLS Certificate for airport-ksf.com
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- urlaub-kassel.de
- Valid from
- Jan 7, 2026
- Valid until
- Apr 7, 2026 (expired 160 days ago)
- Public key
- RSA 4096-bit
- Serial
- 057C41107ACD572F57FB3D74E0E49240C43F
- SHA-256 fingerprint
- D6:D6:F0:B3:11:02:1D:C7:CA:4D:05:1F:74:51:F0:D2:6E:12:85:93:70:34:AB:F4:C4:D6:CC:2D:3F:C3:E6:0B
- Chain
- R13 → 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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