dfn.nl
DELTA Fiber | DELTA Fiber
Last scanned Aug 1, 2026, 9:00 PM · 4 views
Overall score
Fair
Summary
Wij zijn de glasvezelexpert van Nederland en vinden het vanzelfsprekend dat iedereen gebruik moet kunnen maken van gigasnel glasvezelinternet. This website uses Cloudflare Analytics behind Cloudflare CDN. SEO is fair (70/100) and accessibility is excellent (100/100). Security scores fair (50/100) and performance excellent (90/100). Top issue: Missing canonical link.
Wij zijn de glasvezelexpert van Nederland en vinden het vanzelfsprekend dat iedereen gebruik moet kunnen maken van gigasnel glasvezelinternet.
Top issues to fix
7 issues found · 1 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
Multiple H1 headings found
SEOKeep a single H1 per page and demote the others to H2/H3.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
+1 more issue — details in the sections below.
SEO
5 issue(s) found
Performance
2.18 s
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
-2 overall since Jul 25, 2026
- Overall
- 76
- SEO
- 70
- Security
- 50
- Performance
- 90
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
Wij zijn de glasvezelexpert van Nederland en vinden het vanzelfsprekend dat iedereen gebruik moet kunnen maken van gigasnel glasvezelinternet.
Meta tags
- Title
- DELTA Fiber | DELTA Fiber
- Description
- Wij zijn de glasvezelexpert van Nederland en vinden het vanzelfsprekend dat iedereen gebruik moet kunnen maken van gigasnel glasvezelinternet.
- Canonical
- Language
- nl-NL
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- index, follow
- Manifest
- https://www.deltafiber.nl/site.webmanifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- —
- CDN provider
- Cloudflare
- IP address
- —
- ASN
- —
DNS records
| Type | Value |
|---|---|
| A | — |
| AAAA | — |
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Google Trust Services
- Subject
- www.deltafiber.nl
- Valid from
- Jun 12, 2026
- Valid to
- Sep 10, 2026
- Days until expiry
- 39
- SAN domains
- www.deltafiber.nl
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 3 cookie(s) observed
Content & assets
Headings
H1 2 · H2 5 · H3 8
Links
19 internal · 4 external · 20 broken
Images
7 total · 0 missing alt
Scripts / Styles
7 scripts · 1 stylesheets
JS / CSS size
6.5 KB · 2.6 KB
Page size
44.7 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Missing canonical link
- Multiple H1 headings found
- No structured data (JSON-LD) found
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://dfn.nl
- Final URL
- https://www.deltafiber.nl/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 2.18 s
- HTML size
- 44.7 KB
- Redirect chain
- https://dfn.nl → https://www.deltafiber.nl/
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Frequently asked questions
- What technology does dfn.nl use?
- dfn.nl is built with Cloudflare Analytics.
- Is dfn.nl secure (HTTPS)?
- Yes. dfn.nl uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Sep 10, 2026.
- Who hosts dfn.nl?
- Hosting provider information for dfn.nl is not available yet.
- What is dfn.nl's SEO score?
- dfn.nl scored 70/100 for SEO in the latest analysis (fair).
- What is dfn.nl's overall website score?
- dfn.nl has an overall SiteGraph score of 76/100, combining SEO, performance, security, and accessibility.
- Has dfn.nl's score changed over time?
- dfn.nl's overall score has declined by 2 points (from 78 to 76) since Jul 25, 2026.
OpenGraph & Twitter Card
OpenGraph
Twitter Card