SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
aumann-ag.com
SSL/TLS Certificate
SSL/TLS Certificate for aumann-ag.com
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- aumann-ag.com
- Valid from
- Sep 25, 2026
- Valid until
- Dec 24, 2026 (65 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 054AC5409C2B2864EED645F9D0D59DF01199
- SHA-256 fingerprint
- AC:AB:92:FB:6A:3A:3C:E2:AF:3C:71:F5:90:7F:BE:E6:0D:CF:BC:65:E0:10:C7:C7:76:C9:15:D5:B6:6D:FB:A2
- 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.
We've observed 1 previous certificate for this host. This certificate has been served since Oct 4, 2026.
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Uptime
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DNS changes
We watch NS, MX, CAA, CNAME, TXT 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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