What powers jhelioviewer.org?
Last seen Sep 2026 · 7 technologies across 7 categories
Analytics
Google Analytics
since Jul 2021
Caching
Varnish
since Nov 2021
CDN
Fastly
since Nov 2021
JavaScript libraries
PaaS
GitHub Pages
since Nov 2021
Web servers
Apache HTTP Server
since Jul 2021
Widgets
Twitter
since Nov 2021
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
Open Page Rank
3.74 / 10 · ranked #742,815 of all domains
51 referring domains · OpenPageRank
Page
- CDN: Fastly
- Weight: 0.7 MB · 18 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Fastly (185.199.108.153)
- DNS: oma.be
- Email: oma.be
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 1,883,915, 2 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.jhelioviewer.org | 5 |
| jhelioviewer.org | 4 |
Full technology history →
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Recent changes
- dropped Cloudflare Jul 2026
- dropped Cloudflare Bot Management Jul 2026
- dropped Twitter Ads Jul 2026
- detected Cloudflare May 2026
- detected Cloudflare Bot Management May 2026
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025