What technology does sommenoefenen.nl use?

sommenoefenen.nl is built with Apache.

Is sommenoefenen.nl secure (HTTPS)?

Yes. sommenoefenen.nl uses TLS 1.3 with a certificate issued by Trust Provider B.V., valid until Dec 12, 2026.

Who hosts sommenoefenen.nl?

Hosting provider information for sommenoefenen.nl is not available yet.

What is sommenoefenen.nl's SEO score?

sommenoefenen.nl scored 70/100 for SEO in the latest analysis (fair).

What is sommenoefenen.nl's overall website score?

sommenoefenen.nl has an overall SiteGraph score of 77/100, combining SEO, performance, security, and accessibility.

sommenoefenen.nl

Sommen oefenen, rekenspelletjes groep 3, 4, 5, 6, 7 en 8

Last scanned Jul 26, 2026, 12:19 PM

Overall score

Fair

Summary

Op sommenoefenen.nl leer je sommen snel uitrekenen met leuke rekenspelletjes. This website uses Apache. SEO is fair (70/100) and accessibility is fair (60/100). Security scores good (75/100) and performance excellent (100/100). Top issue: Missing canonical link.

Op sommenoefenen.nl leer je sommen snel uitrekenen met leuke rekenspelletjes. Voor groep 3, 4, 5, 6 ,7 en 8!

Top issues to fix

11 issues found · 2 high priority

Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
Over half of images are missing alt text
Accessibility
Add alt attributes to images — screen readers depend on them, and they help image SEO.
Missing X-Content-Type-Options header
Security
Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
Security
Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Missing canonical link
SEO
Add <link rel="canonical"> so search engines know which URL variant to index.
Multiple H1 headings found
SEO
Keep a single H1 per page and demote the others to H2/H3.

+5 more issues — details in the sections below.

SEO

5 issue(s) found

100

Performance

395 ms

Security

HTTPS & header checks

Accessibility

2 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.

Op sommenoefenen.nl leer je sommen snel uitrekenen met leuke rekenspelletjes. Voor groep 3, 4, 5, 6 ,7 en 8!

Meta tags

Title: Sommen oefenen, rekenspelletjes groep 3, 4, 5, 6, 7 en 8
Description: Op sommenoefenen.nl leer je sommen snel uitrekenen met leuke rekenspelletjes. Voor groep 3, 4, 5, 6 ,7 en 8!
Canonical
Language
Charset: utf-8
Viewport: width=device-width, initial-scale=1, minimum-scale=0.75, maximum-scale=2
Robots meta: index, follow
Manifest

Technologies

Detected frameworks, languages, and tools.

Apache

Hosting & CDN

Hosting provider: —
CDN provider: —
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: Trust Provider B.V.
Subject: www.sommenoefenen.nl
Valid from: May 28, 2026
Valid to: Dec 12, 2026
Days until expiry: 137
SAN domains: www.sommenoefenen.nl, sommenoefenen.nl

Security headers

Strict-Transport-SecurityEnabled
Content-Security-PolicyMissing
X-Frame-OptionsMissing
X-Content-Type-OptionsMissing
Referrer-PolicyMissing
Permissions-PolicyMissing

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 2 · H2 14 · H3 0

Links

26 internal · 7 external · 20 broken

Images

15 total · 10 missing alt

Scripts / Styles

3 scripts · 4 stylesheets

JS / CSS size

358 B · 0 B

Page size

14.5 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

Scan details

Requested URL: https://sommenoefenen.nl
Final URL: https://www.sommenoefenen.nl/
HTTP status: 200
HTTP version: HTTP/2
Response time: 395 ms
HTML size: 14.5 KB
Redirect chain: https://sommenoefenen.nl → http://www.sommenoefenen.nl/ → https://www.sommenoefenen.nl/

See something wrong on this report? Request a correction

Same technology stack

gopay.com

Payment gateway that helps you earn more | GoPay

100

apachegoogle-analyticsphp

AWS

dgb.de

Deutscher Gewerkschaftsbund | DGB

100

apache

HETZNER-AS - Hetzner Online GmbH, DE

boschtt.net

Home | Bosch Home Comfort Group

100

apachejquery

VODANET - Vodafone GmbH, DE

ebi.ac.uk

EMBL-EBI homepage | EMBL-EBI

100

wordpressapachegoogle-analytics

JANET - Jisc Services Limited, GB

byside.com

Composable Digital Experience Platform | CoreMedia CMS

100

apachegoogle-analytics

AWS· CloudFront

hovbi.com

Hovbi Trends — Discover What People Are Searching For

100

apachegoogle-ads