SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for itaw.de
Untrusted chain- Issued by (CA)
- Let's Encrypt
- Subject
- itaw.de
- Valid from
- May 26, 2026
- Valid until
- Aug 24, 2026 (17 days remaining)
- Public key
- EC 256-bit
- Serial
- 064243B76630258E828F64265FECD15DBA81
- SHA-256 fingerprint
- 3F:7D:74:56:A6:11:A2:D0:82:81:E7:16:17:26:5E:26:7B:2D:2E:EB:9D:F1:5B:04:A5:43:A7:79:F6:E1:B4:80
- Chain
- —
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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