What powers 
phydemo.app?
Last seen Aug 2026 · 7 technologies across 6 categories
Caching
Varnish
since Feb 2023
CDN
Fastly
since Feb 2023
jQuery CDN
since Feb 2023
JavaScript libraries
Miscellaneous
Open Graph
since Feb 2023
PaaS
GitHub Pages
since Feb 2023
UI frameworks
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
- 58% desktop
- 36% phone
- 6% tablet
United States
India
United Kingdom
Germany
Japan
Canada
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.56 / 10 · ranked #833,971 of all domains
31 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.9 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- CDN: Fastly
- Weight: 0.2 MB · 6 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Fastly (185.199.108.153, IPv6)
- DNS: Google Cloud DNS
- Email: Zoho Mail
- Email security: no SPF record, no DMARC record, DNSSEC signed
- SSL: Let's Encrypt, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 1,884,994
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted