What powers sjef.app?
Last seen Oct 2026 · 48 technologies across 23 categories
Analytics
CDN
CMS
Cookie compliance
Databases
Ecommerce
Font scripts
JavaScript frameworks
JavaScript libraries
Marketing automation
Miscellaneous
PaaS
Page builders
Payment processors
Programming languages
Security
Tag managers
Translation
UI frameworks
Web frameworks
Web servers
WordPress plugins
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 Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 100% phone
Netherlands
Belgium
Germany
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.28 / 10 · ranked #2,915,984 of all domains
10 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1 s |
| INP | 100 ms |
| CLS | 0.15 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Dutch
- Weight: 0.6 MB · 23 requests
- WordPress theme: websheriff · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
From the homepage's own structured data (Oct 2026).
Infrastructure
- Hosted on Combell (85.10.159.115, IPv6)
- DNS: DigitalOcean
- Email: Google Workspace
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 4096, expires Dec 2026
- Common Crawl link graph: rank 19,213,947, 4 hosts
- Verified with: Atlassian, Google, Slack
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.sjef.app | 27 |
| sjef.app | 18 |
| vvnieuwerkerk.sjef.app | 16 |
| snackland.sjef.app | 14 |
| sieraad.sjef.app | 13 |
| live.sjef.app | 12 |
| ontherocks.sjef.app | 12 |
| snowcountry.sjef.app | 11 |
| vertier.sjef.app | 8 |
| hutspot.sjef.app | 7 |