SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
de-wer.de
SSL/TLS Certificate
SSL/TLS Certificate for de-wer.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- de-wer.de
- Valid from
- Aug 27, 2026
- Valid until
- Nov 25, 2026 (35 days remaining)
- Public key
- EC 256-bit
- Serial
- 051E0139757C25510B74E02E0386E369E80F
- SHA-256 fingerprint
- 21:3A:66:5E:77:C8:90:AA:27:4F:09:D2:EC:73:95:E7:5B:C7:D0:F7:71:FA:DE:B8:C0:83:C0:ED:E8:9D:60:53
- Chain
- YE1 → Root YE → ISRG Root X2
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Sep 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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