What powers 
jazzhelden.nl?
Last seen Oct 2026 · 5 technologies across 5 categories
Analytics
Font scripts
JavaScript libraries
Programming languages
Java
since Sep 2021
Tag managers
Google Tag Manager
since Aug 2021
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Nov 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 69% phone
- 31% desktop
Netherlands
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.07 / 10 · ranked #523,980 of all domains
43 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.8 s |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Weight: 1.4 MB · 26 requests
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on TransIP (37.34.50.216)
- DNS: TransIP
- Email: jazzhelden.nl
- Email security: no SPF record, no DMARC record, DNSSEC signed
- SSL: Let's Encrypt, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 989,843, 2 hosts
- Verified with: Google
DNS records as swept Nov 2026, certificate as seen Nov 2026. How the web is hosted