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 bis-s.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- www.bis-s.de
- Valid from
- May 26, 2026
- Valid until
- Dec 10, 2026 (115 days remaining)
- Public key
- RSA 2048-bit
- Serial
- B00EBB721A08E0DF49BAE13ED4D507D3
- SHA-256 fingerprint
- 38:A4:A8:EA:9D:12:64:6E:43:D4:E0:C5:16:E1:3C:E2:C2:E6:A6:69:BD:1C:1F:84:E6:DA:69:0F:D7:45:58:55
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by bis-s.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch bis-s.de 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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