What powers sleepdata.org?
Last seen Aug 2026 · 17 technologies across 12 categories
Analytics
Fathom
since May 2022
CDN
Cloudflare
since Oct 2024
JavaScript graphics
JavaScript libraries
Marketing automation
Constant Contact
since Jan 2023
Miscellaneous
Performance
Turbolinks
since Nov 2021
Programming languages
Ruby
since Apr 2019
Security
UI frameworks
Web frameworks
Ruby on Rails
since Apr 2019
Web servers
AI Crawlers
robots.txt could not be read at the last check (Sep 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Audience
- 92% desktop
- 8% phone
United States
India
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.10 / 10 · ranked #504,311 of all domains
61 referring domains · OpenPageRank
Core Web Vitals
| LCP | 4.6 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 4200 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- Weight: 1.8 MB · 28 requests
- Structured data: Microdata, OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on PHS (170.223.88.242)
- DNS: Hover
- Email: OpenSRS Email
- Email security: SPF (soft fail), no DMARC record
- Common Crawl link graph: rank 1,260,487, 3 hosts
DNS records as swept Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| sleepdata.org | 16 |
| www.sleepdata.org | 15 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Nginx Jun 2026
- detected Phusion Passenger Jun 2026
- dropped Google Hosted Libraries Nov 2025