What powers 
zeiss.nl?
Last seen Oct 2026 · 18 technologies across 11 categories
CMS
Cookie compliance
JavaScript frameworks
JavaScript libraries
Load balancers
Miscellaneous
PaaS
Programming languages
Security
Tag managers
Web frameworks
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
AI Crawlers
No AI crawlers blocked
Audience
- 67% phone
- 17% desktop
- 16% tablet
Netherlands
Belgium
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.67 / 10 · ranked #376,968 of all domains
90 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.3 s |
| INP | 250 ms |
| CLS | 0.05 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Oct 2026.
Page
- Language: Dutch (Netherlands)
- CDN: Akamai
- Weight: 4.4 MB · 55 requests
- Structured data: JSON-LD, OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Registered Mar 1998 (28 years) via Key-Systems GmbH
- Hosted on Akamai (23.204.115.106, IPv6)
- DNS: Akamai Edge DNS
- Email: retarus.com
- Email security: SPF (hard fail), DMARC reject
- SSL: DigiCert, ECDSA P256, expires May 2027
- Common Crawl link graph: rank 9,838,788, 5 hosts
- Verified with: Google
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 |
|---|---|
| jouwopticien.zeiss.nl | 14 |
| www.zeiss.nl | 9 |