What powers 
plan-it-online.nl?
Last seen Sep 2026 · 6 technologies across 6 categories
JavaScript libraries
Security
HSTS
since Apr 2024
UI frameworks
Bootstrap
since Apr 2024
Web frameworks
Microsoft ASP.NET
since Apr 2019
Web servers
Kestrel
since Jul 2026
Webmail
Microsoft 365
since Aug 2022
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Oct 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 66% desktop
- 34% phone
Netherlands
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.46 / 10 · ranked #935,943 of all domains
21 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 725 ms |
| CLS | 0 |
| TTFB | 200 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Weight: 1.1 MB · 15 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- DNS: masterdns.nl
- Email: Microsoft 365
- Email security: SPF (hard fail), no DMARC record
- SSL: Sectigo, RSA 2048, wildcard, expires Jan 2027
- Common Crawl link graph: rank 27,100,965
- Verified with: Microsoft 365
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
- detected Kestrel Jul 2026
- detected Microsoft ASP.NET Jul 2026