What powers groningen4045.nl?
Last seen Sep 2026 · 13 technologies across 11 categories
Advertising
Analytics
CDN
Cookie compliance
Font scripts
JavaScript frameworks
JavaScript libraries
Miscellaneous
Security
Video players
Web servers
AI Crawlers
Blocks 6 of 33 AI crawlers we track by name in its robots.txt. Checked Sep 2026.
Training crawlers
- AI2Bot Blocked
- Bytespider Blocked
- CCBot Blocked
- cohere-training-data-crawler Blocked
- FacebookBot Blocked
- ImagesiftBot Blocked
The other 27 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
6 of 33 AI crawlers blocked
Audience
Netherlands
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.16 / 10 · ranked #1,330,500 of all domains
20 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.8 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 500 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Dutch
- Weight: 1.7 MB · 34 requests
- Structured data: Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on DUOCAST-AS (91.196.105.62)
- DNS: Cloudflare DNS
- Email: no MX record returned
- Email security: SPF (soft fail), DNSSEC signed
- SSL: Let's Encrypt, RSA 4096, expires Nov 2026
- Common Crawl link graph: rank 966,696, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted