SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
zbbs-sh.de
SSL/TLS Certificate
SSL/TLS Certificate for zbbs-sh.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.zbbs-sh.de
- Valid from
- Jun 8, 2026
- Valid until
- Sep 6, 2026 (28 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05FA3FA34D82AEFDF0E315947BE5B9D2FF3F
- SHA-256 fingerprint
- 9D:A7:F4:BE:85:FB:69:D4:CF:C5:AD:B7:11:7E:DE:3C:A9:2C:44:C9:1C:D4:E7:2F:54:B7:B7:D7:F9:06:AB:90
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).
Never get surprised by zbbs-sh.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch zbbs-sh.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.