What powers 
zehnder.nl?
Last seen Oct 2026 · 30 technologies across 19 categories
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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 Nov 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| wtw ventilatie | #2 | 6 |
| warmte terugwin installatie | #2 | 5 |
| ventilatie met warmteterugwinning | #3 | 3 |
| warmte terug win unit | #3 | 3 |
| warmteterugwinning ventilatie | #4 | 2 |
| wtw unit kopen | #5 | 1 |
| ventilatie unit | #6 | 1 |
| woonkamer radiator | #6 | 1 |
| warmte terugwin unit | #8 | 1 |
| badkamer elektrische verwarming | #10 | 0 |
| elektrische verwarming in badkamer | #14 | 0 |
| wtw-unit | #17 | 0 |
| zehnder storing | #17 | 0 |
| zehnder shop | #19 | 0 |
| kleine radiator wc | #24 | 0 |
| kpme | #24 | 0 |
| radiator plaatsen | #31 | 0 |
| onderhoud wtw installatie | #32 | 0 |
| badkamer elektrisch verwarmen | #33 | 0 |
| handdoek radiator | #34 | 0 |
| elektrisch verwarming badkamer | #35 | 0 |
| vrijstaande radiator | #36 | 0 |
| ventilatie units | #49 | 0 |
| zehnder air filters | #49 | 0 |
| comfotube zehnder | #57 | 0 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
AI Crawlers
No AI crawlers blocked
Audience
- 49% phone
- 46% desktop
- 5% tablet
Netherlands
Belgium
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
5.00 / 10 · ranked #246,453 of all domains
91 referring domains · OpenPageRank
Search traffic
23 est. monthly organic visits (US)
35 keywords in Google's top 30
Core Web Vitals
| LCP | 1.3 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Dutch
- CDN: Amazon CloudFront
- Weight: 8.4 MB · 70 requests
- Structured data: JSON-LD, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Zehnder Group Nederland bv
From the homepage's own structured data (Oct 2026).
Infrastructure
- Registered Apr 1997 (29 years) via Domain Robot
- Hosted on Amazon Web Services (54.192.55.53, IPv6)
- DNS: managed-ip.com
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC quarantine
- SSL: Amazon Trust Services, RSA 2048, expires May 2027
- Common Crawl link graph: rank 168,086, 5 hosts
- Verified with: Brevo, Microsoft 365
DNS records as swept Nov 2026, certificate as seen Nov 2026, registration from the registry's RDAP service. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.zehnder.nl | 25 |
| www.product-registration.zehnder.nl | 13 |
| product-registration.zehnder.nl | 7 |
Full technology history →
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Recent changes
- detected Calendly Oct 2026
- detected Twitch Player Oct 2026
- detected Usercentrics Oct 2026