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 knut-hilft.de

Valid
Issued by (CA)
Google Trust Services
Subject
knut-hilft.de
Valid from
Sep 10, 2026
Valid until
Dec 9, 2026 (51 days remaining)
Public key
EC 256-bit
Serial
32CACD1916FA9F6413D8B437C57EE5F7
SHA-256 fingerprint
3B:04:39:9D:23:6C:CB:C2:05:AB:07:F7:CB:31:A7:74:7F:98:5C:20:E4:CA:74:93:15:31:16:0A:8D:C4:90:04
Chain
WE1 → GTS Root R4
Subject Alternative Names (2)
*.knut-hilft.de, knut-hilft.de

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

This certificate has been served since Oct 2, 2026.

Never get surprised by knut-hilft.de's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch knut-hilft.de continuously, notifying you the moment anything moves across all three signals:

Certificate monitor showing the issuer, expiry date, chain status, fingerprint, covered names, and a history of a rotation and an expiry warning

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, CNAME, TXT 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.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.