What powers theoriecursus.nl?

Last seen Sep 2026 · 20 technologies across 12 categories

Analytics

Google Analytics
since Mar 2019

CMS

WordPress
since Mar 2019

Databases

MySQL
since Mar 2019

JavaScript libraries

core-js v3.37.1
since Sep 2021
jQuery v3.7.1
since Mar 2019
jQuery Migrate v3.4.1
since Mar 2019

Live chat

Tawk.to
since Mar 2019
WhatsApp Business Chat
since Feb 2022

Miscellaneous

Open Graph
since Sep 2022
RSS
since Dec 2022

Mobile frameworks

jQuery Mobile v4.27.7
since Feb 2026

Performance

Priority Hints
since Aug 2023

Programming languages

PHP
since Mar 2019

Security

HSTS
since Sep 2022

Web servers

Nginx
since Apr 2022

WordPress plugins

Cookie Notice
since Apr 2022
Divi v4.27.7
since Jul 2021
LearnDash
since Oct 2023
RankMath SEO
since Nov 2022
WooCommerce
since Mar 2019

AI Crawlers

Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Oct 2026.

  • robots.txt found
  • llms.txt not checked
  • ai.txt not checked

See who blocks each AI crawler across the web

AI Crawlers

No AI crawlers blocked

Full breakdown

Audience

  • 55% desktop
  • 45% phone
  • Netherlands

Where the site's Chrome visitors come from, largest estimated audience first.

Open Page Rank

1.87 / 10 · ranked #3,964,531 of all domains

4 referring domains · OpenPageRank

Core Web Vitals

LCP2.9 s
INP75 ms
CLS0.1
TTFB2100 ms

Real user p75, Chrome UX Report, Sep 2026.

Page

  • Language: Dutch
  • Weight: 1.1 MB · 76 requests
  • WordPress theme: divi (child: theorie) · all themes
  • Structured data: JSON-LD, OpenGraph, Twitter Cards

Homepage as crawled by the HTTP Archive, Oct 2026.

Organisation

  • Theoriecursus.nl
  • Industry: Education (declares EducationalOrganization)
  • Profiles: Facebook, X

From the homepage's own structured data (Oct 2026).

Infrastructure

  • Hosted on BITENCY-AS (45.84.218.45, IPv6)
  • DNS: zxcs.be
  • Email: no MX record returned
  • Email security: SPF (soft fail), DMARC monitor only, DNSSEC signed
  • SSL: Trust Provider B.V., ECDSA P384, expires Feb 2027
  • Common Crawl link graph: rank 14,409,444, 2 hosts

DNS records as swept Sep 2026, certificate as seen Oct 2026. How the web is hosted

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