What powers 
cartesius-utrecht.nl?
Last seen Sep 2026 · 19 technologies across 14 categories
Advertising
Microsoft Advertising
since Oct 2024
Analytics
Google Analytics
since Jan 2022
CDN
Cookie compliance
Ecommerce
Cart Functionality
since May 2023
Mailgun
since Aug 2022
JavaScript frameworks
JavaScript libraries
Miscellaneous
Webpack
since Jan 2022
Page builders
Webflow
since Oct 2024
Security
HSTS
since Sep 2022
Tag managers
Google Tag Manager
since Jan 2022
Translation
Weglot
since Mar 2025
Webmail
Microsoft 365
since Aug 2022
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 56% phone
- 44% desktop
Netherlands
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.01 / 10 · ranked #561,705 of all domains
44 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 10.5 MB · 44 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Cloudflare (198.202.211.1)
- Email: no MX record returned
- SSL: Google Trust Services, ECDSA P256, expires Nov 2026
- Common Crawl link graph: rank 6,866,259, 2 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- dropped core-js May 2026
- dropped Facebook Pixel May 2026
- dropped HTTP/3 Feb 2026
- dropped Azure Dec 2025
- detected HTTP/3 Nov 2025