What technology does alt255.nl use?

alt255.nl is built with WordPress, jQuery, Apache.

Is alt255.nl secure (HTTPS)?

Yes. alt255.nl uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 19, 2026.

Hosting provider information for alt255.nl is not available yet.

What is alt255.nl's SEO score?

alt255.nl scored 90/100 for SEO in the latest analysis (excellent).

What is alt255.nl's overall website score?

alt255.nl has an overall SiteGraph score of 92/100, combining SEO, performance, security, and accessibility.

alt255.nl

Alt255

Last scanned Aug 24, 2026, 1:23 PM

Overall score

Excellent

Summary

internetdiensten. This website uses WordPress. SEO is excellent (90/100) and accessibility is excellent (100/100). Security scores good (80/100) and performance excellent (100/100). Top issue: robots.txt not found.

internetdiensten

Top issues to fix

5 issues found · 1 high priority

Missing Content-Security-Policy header
Security
Add a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing X-Frame-Options header
Security
Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
robots.txt not found
SEO
Publish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEO
Publish an XML sitemap and reference it from robots.txt to speed up page discovery.
1 broken link on the page
SEO
Fix or remove broken links — they waste crawl budget and erode user trust.

SEO

2 issue(s) found

100

Performance

331 ms

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.

internetdiensten

Contact

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

Email: info@alt255.nl

Meta tags

Title: Alt255
Description: internetdiensten
Canonical: https://www.alt255.nl/
Language: nl-NL
Charset: UTF-8
Viewport: width=device-width, user-scalable=no, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0
Robots meta: max-image-preview:large
Manifest

Technologies

Detected frameworks, languages, and tools.

WordPress jQuery 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: Let's Encrypt
Subject: alt255.nl
Valid from: Jul 21, 2026
Valid to: Oct 19, 2026
Days until expiry: 54
SAN domains: alt255.nl, www.alt255.nl

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 1 · H3 0

Links

5 internal · 2 external · 1 broken

Images

4 total · 0 missing alt

Scripts / Styles

30 scripts · 7 stylesheets

JS / CSS size

63.0 KB · 15.1 KB

Page size

31.8 KB

Robots.txt & Sitemap

robots.txt: Not found
Disallow rules: 0
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://alt255.nl
Final URL: https://www.alt255.nl/
HTTP status: 200
HTTP version: HTTP/2
Response time: 331 ms
HTML size: 31.8 KB
Redirect chain: https://alt255.nl → https://www.alt255.nl/

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does alt255.nl use?: alt255.nl is built with WordPress, jQuery, Apache.
Is alt255.nl secure (HTTPS)?: Yes. alt255.nl uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Oct 19, 2026.
Who hosts alt255.nl?: Hosting provider information for alt255.nl is not available yet.
What is alt255.nl's SEO score?: alt255.nl scored 90/100 for SEO in the latest analysis (excellent).
What is alt255.nl's overall website score?: alt255.nl has an overall SiteGraph score of 92/100, combining SEO, performance, security, and accessibility.