What powers rtog.org?
Last seen Sep 2026 · 14 technologies across 10 categories
Analytics
Google Analytics
since Aug 2018
Authentication
NextAuth.js
since Jun 2025
CDN
Cloudflare
since Jul 2026
Font scripts
Google Font API
since Apr 2021
JavaScript frameworks
Miscellaneous
Open Graph
since Sep 2022
Webpack
since Jun 2025
PaaS
Amazon Web Services
since May 2026
Netlify
since Jun 2025
Programming languages
Node.js
since Jun 2025
Security
Cloudflare Bot Management
since Jul 2026
HSTS
since Sep 2022
Tag managers
Google Tag Manager
since Oct 2021
AI Crawlers
Blocks all crawlers by default in robots.txt (User-agent: *). Checked Oct 2026.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
AI Crawlers
All crawlers blocked
Open Page Rank
4.40 / 10 · ranked #417,516 of all domains
94 referring domains · OpenPageRank
Page
- Language: English
- CDN: Netlify
- Weight: 0.9 MB · 32 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Radiation Therapy Oncology Group
- Founded: 1971
- Country: United States
From Wikidata (CC0).
Infrastructure
- Hosted on Amazon Web Services (3.33.186.135)
- Email: Broadcom MessageLabs
- Email security: no SPF record, no DMARC record
- SSL: GoDaddy, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 579,159, 2 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- detected Cloudflare Jul 2026
- detected Cloudflare Bot Management Jul 2026
- detected Amazon Web Services May 2026