SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
zur-it.de
SSL/TLS Certificate
SSL/TLS Certificate for zur-it.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- zur-it.de
- Valid from
- Aug 9, 2026
- Valid until
- Nov 7, 2026 (56 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 0687F7DB75D46271643C16030B6B61E7B250
- SHA-256 fingerprint
- F2:0C:69:AC:C7:0C:AF:51:61:A2:7F:32:A4:0F:48:C5:A1:2A:96:A8:4F:84:9B:72:13:10:DE:75:9B:30:6A:19
- 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 zur-it.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch zur-it.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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