What powers underdog.nl?
Last seen Sep 2026 · 54 technologies across 26 categories
Accessibility
Advertising
Analytics
Caching
CDN
CMS
Cookie compliance
Databases
Ecommerce
Font scripts
JavaScript frameworks
JavaScript graphics
JavaScript libraries
Live chat
Marketing automation
Miscellaneous
Payment processors
Performance
Programming languages
Reviews
Security
Tag managers
UI frameworks
Web servers
WordPress plugins
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 found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Standards: llms.txt
Audience
Netherlands
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.14 / 10 · ranked #3,236,492 of all domains
7 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.9 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 1000 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Dutch (Netherlands)
- Weight: 3.2 MB · 210 requests
- WordPress theme: hello-elementor (child: hello-theme-child-master) · all themes
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
From the homepage's own structured data (Oct 2026).
Infrastructure
- Hosted on DUOCAST-AS (45.82.188.171)
- DNS: cloud86.nl
- Email: Google Workspace
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, ECDSA P256, expires Dec 2026
- Common Crawl link graph: rank 29,411,332
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.underdog.nl | 35 |
| underdog.nl | 25 |
| mijn.underdog.nl | 8 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped particles.js Sep 2026
- dropped Element UI Jul 2026
- detected reCAPTCHA Jul 2026
- dropped Vue.js Jul 2026
- detected GSAP Jun 2026
- dropped Plesk Mar 2026
- dropped GSAP Dec 2025
- detected particles.js Dec 2025