feedback.propstack.de is registered with whois.denic.de. Its SSL certificate from Let's Encrypt is valid until 4 Dec 2026, and the site does not support HTTP/3.
On-page basics for the homepage.
Networks cache previews — changes can take time to show.
What security vendors and the WOT community say about this domain.
0 of 5 protections set up
No SPF record: any server can send mail that claims to come from this domain.
—No key at the 12 common selectors we checked. A custom selector can’t be found from DNS alone.
—No DMARC policy: receivers aren’t told what to do with mail that fails SPF and DKIM.
—Forces encrypted delivery between mail servers.
—Shows the brand logo in supporting inboxes. Optional; needs DMARC enforcement.
—Read from the domain's public DNS records.
2 of 6 recommended headers
Forces HTTPS on future visits.
Limits where scripts can load from — the main defence against XSS.
Stops the site being framed for clickjacking.
Prevents browsers guessing file types.
Which AI crawlers this site allows in robots.txt.
From robots.txt. “Partly blocked”: kept out of some pages, not the homepage. Not every crawler follows it.
Pages and files that show who runs the site and how it handles data.
What loads and tracks visitors when the homepage opens.
Running a full browser scan of the homepage… This takes about a minute.
Internet standards that make a site faster and safer.
The path from a typed address to the final page.
Is feedback.propstack.de’s name taken on other extensions?
No reviews yet. Used feedback.propstack.de? Be the first to say how it went.
Reviews are from CubDomain users and are separate from the security verdicts above.
Common questions, answered from this report's data.
feedback.propstack.de has no community safety rating yet, and it isn't on any of the 6 blocklists we check. Its SSL certificate is valid until 4 Dec 2026. See Security →
feedback.propstack.de is registered through whois.denic.de. See WHOIS →
Raw registry data for feedback.propstack.de. May be redacted by privacy services.
Domain: propstack.de Status: connect
Four timed TCP connections to port 443 from CubDomain's servers.
CubDomain is not affiliated with feedback.propstack.de. Data is collected independently from public sources and some figures are estimates, provided for information only.
Shares more of the URL with other sites than it needs to.
Restricts camera, microphone and other browser features.
From the homepage's response, https://feedback.propstack.de/front/frontUnavailable/
Spam and malware blocklists for the site's IP and mail servers.
0 of 6 blocklists list this domain's IP or mail servers.
Found in public certificate transparency logs.
| Subdomain | First seen |
|---|---|
| tipp.propstack.de | Aug 2026 |
| tippgeber.propstack.de | Aug 2026 |
| image.propstack.de | Feb 2026 |
| docs.propstack.de | Aug 2026 |
| cloud.propstack.de | Oct 2025 |
When the site first appeared, and what has changed since.
No changes seen since we started recording on 21 Oct 2026.