What powers blue21.nl?
Last seen Jun 2026 · 30 technologies across 19 categories
Advertising
Microsoft Advertising
since Oct 2024
Analytics
Google Analytics
since Mar 2024
CDN
Cloudflare
since Apr 2022
CMS
Cookie compliance
Databases
MySQL
since Apr 2022
Font scripts
Google Font API
since Apr 2022
Twitter Emoji (Twemoji)
since Dec 2025
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2022
RSS
since Dec 2022
PaaS
SiteGround
since Aug 2022
Performance
Priority Hints
since Mar 2024
Programming languages
PHP
since Apr 2022
Security
Cloudflare Bot Management
since May 2023
Tag managers
Google Tag Manager
since Mar 2024
Video players
Vimeo
since May 2023
Web servers
Nginx
since Sep 2022
Webmail
Microsoft 365
since Aug 2022
WordPress plugins
Essential Addons for Elementor
since Mar 2024
Google Tag Manager for WordPress
since Sep 2025
WordPress themes
Astra
since Mar 2024
Page
- Language: English (United States)
- CDN: Google
- Weight: 2.1 MB · 92 requests
- WordPress theme: astra · all themes
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
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Recent changes
- detected Twitter Emoji (Twemoji) Dec 2025
- dropped Elementor Header & Footer Builder Oct 2025