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 j-exp.de
Expiring soon- Issued by (CA)
- Let's Encrypt
- Subject
- j-exp.de
- Valid from
- May 10, 2026
- Valid until
- Aug 8, 2026 (12 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 06440ED508B8107509035E5065F3159D8CBE
- SHA-256 fingerprint
- 8E:B6:83:F6:CF:F6:29:97:37:CB:25:6F:89:AA:57:67:18:95:12:0B:6E:B2:28:E3:C4:CE:D9:DB:EA:95:40:F1
- Chain
- R12 → 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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This is today's certificate. Turn on monitoring and we'll watch j-exp.de continuously, notifying you the moment anything moves across all three signals:
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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