SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
dia-lab.de
SSL/TLS Certificate
SSL/TLS Certificate for dia-lab.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.dia-lab.de
- Valid from
- Sep 20, 2026
- Valid until
- Apr 2, 2027 (179 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 1E33DE183028BF32ADDDBC30B49DC099
- SHA-256 fingerprint
- FB:85:53:F5:19:26:1F:D0:AA:82:D4:1D:EF:1A:83:46:09:25:36:81:E2:B2:63:E8:50:BF:FE:8A:87:3B:53:08
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
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 Sep 25, 2026.
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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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