SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
bsb-schule.de
SSL/TLS Certificate
SSL/TLS Certificate for bsb-schule.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- bsb-schule.de
- Valid from
- Sep 5, 2026
- Valid until
- Dec 4, 2026 (89 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 054268BA425CA7789BEA175D5FCD265E2C6C
- SHA-256 fingerprint
- E8:90:F7:A7:3E:0F:80:A7:35:BB:BC:45:8E:33:FC:32:7E:FD:C3:9D:FB:A8:3B:16:C1:C3:2A:B8:24:FC:B9:04
- 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.
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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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