SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
bis-school.net
SSL/TLS Certificate
SSL/TLS Certificate for bis-school.net
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- bis-school.net
- Valid from
- Jul 26, 2026
- Valid until
- Oct 24, 2026 (37 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06241D2D9BBC00AE730A5594B88F31D55F58
- SHA-256 fingerprint
- A6:26:52:3C:02:79:67:1E:A6:46:9E:FC:8A:3A:57:D4:E8:F2:2F:FD:9B:09:10:73:B6:2D:C8:2E:CE:08:EC:55
- 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.
Never get surprised by bis-school.net's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch bis-school.net continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
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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