What powers 
janrotmans.nl?
Last seen Oct 2026 · 36 technologies across 20 categories
Advertising
Twitter Ads
since Dec 2021
Analytics
Google Analytics
since May 2019
CDN
Cloudflare
since May 2026
CMS
WordPress
since May 2019
Databases
MySQL
since May 2019
Font scripts
JavaScript libraries
Swiper
since Nov 2023
Miscellaneous
PaaS
WordPress.com
since Nov 2023
Page builders
WordPress Block Editor
since Aug 2024
Performance
Priority Hints
since Dec 2023
Photo galleries
PhotoSwipe
since Sep 2022
Programming languages
PHP
since May 2019
Security
Cloudflare Bot Management
since May 2026
HSTS
since Nov 2023
Video players
Vimeo
since May 2026
Web servers
Apache HTTP Server
since May 2019
Nginx
since Nov 2023
Webmail
Microsoft 365
since Apr 2026
Widgets
Twitter
since May 2020
WordPress plugins
WordPress themes
Astra
since Nov 2023
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Nov 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
Netherlands
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.13 / 10 · ranked #491,325 of all domains
70 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.8 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Dutch (Netherlands)
- Weight: 10.8 MB · 69 requests
- WordPress theme: astra · all themes
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Automattic (WordPress.com) (192.0.78.173)
- DNS: antagonist.nl
- Email: no MX record returned, SPF names Microsoft 365
- Email security: SPF (soft fail), DMARC monitor only, DNSSEC signed
- SSL: Google Trust Services, ECDSA P256, expires Jan 2027
- Common Crawl link graph: rank 3,001,068, 2 hosts
- Verified with: Microsoft 365
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| janrotmans.nl | 25 |
| www.janrotmans.nl | 18 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped HTTP/3 Jul 2026
- detected Cloudflare May 2026
- detected Cloudflare Bot Management May 2026
- detected Vimeo May 2026
- detected Twitter Emoji (Twemoji) Dec 2025