SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
fs-net.de
SSL/TLS Certificate
SSL/TLS Certificate for fs-net.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- fs-net.de
- Valid from
- Oct 4, 2026
- Valid until
- Jan 2, 2027 (62 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0549C1BC5F50C4E58F99FED5CC21142277F8
- SHA-256 fingerprint
- BF:BD:4A:9F:1B:8C:30:DE:FF:07:61:84:93:B3:AA:8B:CE:48:B3:F9:2D:8C:21:32:CC:4B:27:73:A3:9C:67:72
- Chain
- YR1 → Root YR → ISRG Root X1
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 10, 2026.
Never get surprised by fs-net.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch fs-net.de continuously, notifying you the moment anything moves across all three signals:
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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