What powers 
psi.ir?
Last seen Oct 2020 · 5 technologies across 5 categories
Font scripts
Font Awesome
since Jun 2020
JavaScript libraries
Operating systems
Windows Server
since Jan 2019
Web frameworks
Microsoft ASP.NET
since Jun 2017
Web servers
AI Crawlers
No robots.txt, so all AI crawlers are allowed by default. Checked Nov 2026.
- robots.txt not found
- llms.txt not found
- ai.txt not found
AI Crawlers
No robots.txt, all AI crawlers allowed
Audience
- 81% phone
- 19% desktop
Iran
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.75 / 10 · ranked #279,769 of all domains
202 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.5 s |
| INP | 300 ms |
| CLS | 0.05 |
| TTFB | 1500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Organisation
- Physics Society of Iran
- Founded: 1932
- Sector: higher education
- Country: Iran
From Wikidata (CC0).
Infrastructure
- Hosted on ABRARVAN-AS AbrArvan CDN and IaaS (45.82.138.40)
- DNS: arvancdn.ir
- Email: psi.ir
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, RSA 3072, expires Jan 2027
- Common Crawl link graph: rank 2,089,750, 3 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| psi.ir | 5 |
| www.psi.ir | 5 |