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 a-jp.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- ajp-architekten.de
- Valid from
- Jun 25, 2026
- Valid until
- Sep 23, 2026 (59 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 055489385A6FCB3D0FB655E011D8DD489F46
- SHA-256 fingerprint
- 5E:F0:5F:5E:E9:45:BF:CE:30:88:85:28:35:EB:7A:30:3C:69:2E:D8:6A:14:7E:38:5B:20:67:0D:64:E7:BE:29
- Chain
- YR2 → Root YR → 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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Uptime
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DNS changes
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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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