1und1.de
1&1 Mobilfunk und Internet > Alles aus einer Hand
Last scanned Jul 21, 2026, 12:33 PM · 3 views
Overall score
Great
Top issues to fix
3 issues found · 1 high priority
No H1 heading found
SEOAdd exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
3 broken links on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
Summary
Die besten Angebote für Mobilfunk & Internet ➤ Günstige Tarife ✓ Handys & Tablets ✓ Highspeed Internet ✓ Top Service ➤ Jetzt bei 1&1 informieren!. This website uses Nginx hosted on IONOS-AS - IONOS SE, DE. SEO is excellent (90/100) and accessibility is excellent (90/100). Security scores excellent (90/100) and performance good (80/100). Top issue: No H1 heading found.
SEO
1 issue(s) found
Performance
532 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Organization
Company details published in this site's own structured data.
1&1 Telecommunication SE
Contact
Email, phone, and address published on this site's own pages.
- Address
- Elgendorfer Str. 57, Montabaur, Rheinland-Pfalz, 56410, DE
Meta tags
- Title
- 1&1 Mobilfunk und Internet > Alles aus einer Hand
- Description
- Die besten Angebote für Mobilfunk & Internet ➤ Günstige Tarife ✓ Handys & Tablets ✓ Highspeed Internet ✓ Top Service ➤ Jetzt bei 1&1 informieren!
- Canonical
- https://www.1und1.de/
- Language
- de
- Charset
- UTF-8
- Viewport
- width=device-width, initial-scale=1.0, maximum-scale=2.0, user-scalable=1, shrink-to-fit=no
- Robots meta
- index,follow
- Manifest
- https://www.1und1.de/_Resources/Static/Packages/ONEANDONE.RNodeTypes/1784275713/images/favicon-delivery/manifest.json?bust=4
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- IONOS-AS - IONOS SE, DE
- CDN provider
- —
- IP address
- 217.160.72.6
- ASN
- AS8560 (IONOS-AS - IONOS SE, DE)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- DigiCert Inc
- Subject
- *.1und1.de
- Valid from
- Jun 19, 2026
- Valid to
- Jan 3, 2027
- Days until expiry
- 166
- SAN domains
- *.1und1.de, 1und1.de
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyEnabled
- X-Frame-OptionsMissing
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyMissing
Compression: gzip · 3 cookie(s) observed
Content & assets
Headings
H1 0 · H2 5 · H3 0
Links
54 internal · 150 external · 3 broken
Images
146 total · 0 missing alt
Scripts / Styles
88 scripts · 1 stylesheets
JS / CSS size
996 KB · 1.2 MB
Page size
354 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 35
- sitemap.xml
- Found
- URLs in sitemap
- 112
SEO issues
- No H1 heading found
Accessibility issues
- No H1 heading found
Careers
This company has an active careers page, but individual openings weren't reliably parsed from it — visit the page above for current listings.
Scan details
- Requested URL
- https://1und1.de
- Final URL
- https://www.1und1.de/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 525 ms
- HTML size
- 354 KB
- Redirect chain
- https://1und1.de → https://www.1und1.de/
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Frequently asked questions
- What technology does 1und1.de use?
- 1und1.de is built with WooCommerce, Nginx.
- Is 1und1.de secure (HTTPS)?
- Yes. 1und1.de uses TLS 1.3 with a certificate issued by DigiCert Inc, valid until Jan 3, 2027.
- Who hosts 1und1.de?
- 1und1.de is hosted on IONOS-AS - IONOS SE, DE.
- What is 1und1.de's SEO score?
- 1und1.de scored 90/100 for SEO in the latest analysis (excellent).
- What is 1und1.de's overall website score?
- 1und1.de has an overall SiteGraph score of 88/100, combining SEO, performance, security, and accessibility.
- What company operates 1und1.de?
- 1und1.de is operated by 1&1 Telecommunication SE.
- Is 1und1.de hiring?
- 1und1.de has a careers page; check it directly for current openings.
OpenGraph & Twitter Card
OpenGraph
Twitter Card