What powers 
zwembaduniek.nl?
Last seen Sep 2026 · 36 technologies across 17 categories
Analytics
CDN
CMS
Cookie compliance
Databases
Font scripts
JavaScript frameworks
JavaScript libraries
Miscellaneous
Performance
Programming languages
Tag managers
UI frameworks
Web servers
Webmail
WordPress plugins
WordPress themes
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Standards: llms.txt
Audience
- 80% phone
- 20% desktop
Netherlands
Belgium
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.05 / 10 · ranked #537,031 of all domains
83 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.8 s |
| INP | 150 ms |
| CLS | 0 |
| TTFB | 2100 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English (United States)
- Weight: 36.3 MB · 175 requests
- WordPress theme: astra · all themes
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Leaseweb (85.17.28.252)
- DNS: sempris.be
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 2048, wildcard, expires Dec 2026
- Common Crawl link graph: rank 7,890,112
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- detected Cookie Script Feb 2026
- detected Facebook Pixel Feb 2026
- detected Popup Maker Feb 2026
- detected Site Kit Feb 2026
- detected Google Tag Manager Jan 2026
- dropped Cookie Script Dec 2025
- dropped Facebook Pixel Dec 2025
- dropped Google Tag Manager Dec 2025
- dropped Popup Maker Dec 2025
- dropped reCAPTCHA Dec 2025
- dropped Site Kit Dec 2025
- dropped UIKit Dec 2025
- dropped WP-Optimize Dec 2025
- detected Astra Nov 2025
- detected Complianz Nov 2025
- detected Elementor Header & Footer Builder Nov 2025
- detected Essential Addons for Elementor Nov 2025
- detected Font Awesome Nov 2025
- detected Google Font API Nov 2025
- detected Isotope Nov 2025
- detected jsDelivr Nov 2025
- detected Priority Hints Nov 2025
- detected Swiper Nov 2025