SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
asta-giessen.de
SSL/TLS Certificate
SSL/TLS Certificate for asta-giessen.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- asta-giessen.de
- Valid from
- Jun 18, 2026
- Valid until
- Sep 16, 2026 (45 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06C694B90F1D3328D193730C05E71D94B7A0
- SHA-256 fingerprint
- 1A:BA:4E:97:1E:61:D3:41:4A:75:C4:4F:BF:EC:D8:AD:4B:15:4B:59:82:76:FD:9E:77:68:5C:72:C9:60:CF:62
- 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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