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 pasf.de
Expired- Issued by (CA)
- Let's Encrypt
- Subject
- pasf.de
- Valid from
- Sep 11, 2022
- Valid until
- Dec 10, 2022 (expired 1364 days ago)
- Public key
- RSA 2048-bit
- Serial
- 03B99DCC5F1186A262B86872BEC71B67C21A
- SHA-256 fingerprint
- 5F:87:CD:06:6A:18:0A:52:D0:E0:45:50:A3:AD:2E:45:5F:38:A7:C3:58:FB:90:C9:D6:E9:FA:78:E2:F1:3E:5E
- Chain
- R3 → 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
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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