What powers 
keringhuis.nl?
Last seen Aug 2026 · 6 technologies across 6 categories
Analytics
Google Analytics
since Apr 2019
JavaScript libraries
Programming languages
PHP
since Sep 2021
Security
HSTS
since Sep 2022
Web servers
Apache HTTP Server
since Apr 2019
Webmail
Microsoft 365
since Aug 2022
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Sep 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 76% phone
- 24% desktop
Netherlands
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.98 / 10 · ranked #585,458 of all domains
50 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1 s |
| INP | 50 ms |
| CLS | 0.05 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: Dutch
- Weight: 6.4 MB · 48 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on DMA-AS (217.170.16.152)
- DNS: dma.nl
- Email: Microsoft 365
- Email security: no SPF record, no DMARC record, DNSSEC signed, CAA
- SSL: Sectigo, RSA 2048, wildcard, expires Jan 2027
- Common Crawl link graph: rank 745,153, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted