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3u.net

3U HOLDING AG: Erfolg in Digitalisierung, Onlinehandel & Erneuerbaren Energien

Last scanned Jul 26, 2026, 5:18 AM · 2 views

99

Overall score

Excellent

Summary

3U HOLDING AG investiert in ITK, erneuerbare Energien und SHK. This website uses WordPress hosted on HETZNER-AS - Hetzner Online GmbH, DE. SEO is excellent (95/100) and accessibility is excellent (100/100). Security scores excellent (100/100) and performance excellent (100/100). Top issue: Title longer than 60 characters.

3U HOLDING AG investiert in ITK, erneuerbare Energien und SHK. Fokus auf E-Commerce und nachhaltiges Wachstum in Deutschland und Europa.

Germany
Hosted on HETZNER-AS - Hetzner Online GmbH, DE

Top issues to fix

3 issues found

  • 2 cookies without Secure/HttpOnly flags

    Security

    Set Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.

  • Title longer than 60 characters

    SEO

    Shorten the title to under 60 characters so search results don't truncate it.

  • 1 broken link on the page

    SEO

    Fix or remove broken links — they waste crawl budget and erode user trust.

95

SEO

1 issue(s) found

100

Performance

577 ms

100

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

Company details published in this site's own structured data.

3U HOLDING AG investiert in ITK, erneuerbare Energien und SHK. Fokus auf E-Commerce und nachhaltiges Wachstum in Deutschland und Europa.

YouTubeLinkedInX (Twitter)

Contact

Email, phone, and address published on this site's own pages.

Meta tags

Title
3U HOLDING AG: Erfolg in Digitalisierung, Onlinehandel & Erneuerbaren Energien
Description
3U HOLDING AG investiert in ITK, erneuerbare Energien und SHK. Fokus auf E-Commerce und nachhaltiges Wachstum in Deutschland und Europa.
Canonical
https://www.3u.net/
Language
de-DE
Charset
UTF-8
Viewport
width=device-width, initial-scale=1
Robots meta
index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
Startseite
og:description
3U HOLDING AG investiert in ITK, erneuerbare Energien und SHK. Fokus auf E-Commerce und nachhaltiges Wachstum in Deutschland und Europa.
og:type
website
og:url
https://www.3u.net/

Twitter Card

twitter:card
summary_large_image
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

PHPWordPressjQueryGoogle AnalyticsApache

Hosting & CDN

CDN provider
—
IP address
78.47.62.47
ASN
AS24940 (HETZNER-AS - Hetzner Online GmbH, DE)

DNS records

TypeValue
A
  • 78.47.62.47
AAAA
  • 2a01:4f8:d0a:43b8::2
MX—
TXT—
NS—
CAA—
CNAME—
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
DigiCert Inc
Subject
3u.net
Valid from
Apr 15, 2026
Valid to
Oct 30, 2026
Days until expiry
94
SAN domains
3u.net, www.3u.net

Security headers

  • Strict-Transport-SecurityEnabled
  • Content-Security-PolicyEnabled
  • X-Frame-OptionsEnabled
  • X-Content-Type-OptionsEnabled
  • Referrer-PolicyEnabled
  • Permissions-PolicyEnabled

Compression: gzip · 2 cookie(s) observed

Content & assets

Headings

H1 1 · H2 5 · H3 10

Links

53 internal · 13 external · 1 broken

Images

12 total · 0 missing alt

Scripts / Styles

61 scripts · 55 stylesheets

JS / CSS size

631 KB · 210 KB

Page size

103 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
49
sitemap.xml
Found
URLs in sitemap
-1

SEO issues

  • Title longer than 60 characters

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://3u.net
Final URL
https://www.3u.net/
HTTP status
200
HTTP version
HTTP/2
Response time
575 ms
HTML size
103 KB
Redirect chain
https://3u.net → https://www.3u.net/

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Frequently asked questions

What technology does 3u.net use?
3u.net is built with PHP, WordPress, jQuery, Google Analytics, Apache.
Is 3u.net secure (HTTPS)?
Yes. 3u.net uses TLS 1.3 with a certificate issued by DigiCert Inc, valid until Oct 30, 2026.
Who hosts 3u.net?
3u.net is hosted on HETZNER-AS - Hetzner Online GmbH, DE.
What is 3u.net's SEO score?
3u.net scored 95/100 for SEO in the latest analysis (excellent).
What is 3u.net's overall website score?
3u.net has an overall SiteGraph score of 99/100, combining SEO, performance, security, and accessibility.