What powers npirs.org?
Last seen May 2026 · 14 technologies across 7 categories
Analytics
Google Analytics
since May 2023
CDN
Font scripts
JavaScript frameworks
JavaScript libraries
Lightbox
since May 2026
Programming languages
PHP
since May 2023
Web servers
Apache HTTP Server
since May 2023
AI Crawlers
robots.txt could not be read at the last check (Oct 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Audience
- 100% desktop
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.14 / 10 · ranked #1,357,242 of all domains
29 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.8 s |
| INP | 50 ms |
| CLS | 0.35 |
| TTFB | 1500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Infrastructure
- Hosted on PURDUE (128.210.27.178)
- DNS: purdue.edu
- Email: no MX record returned
- SSL: Internet2, ECDSA P384, expires Apr 2027
- Common Crawl link graph: rank 7,042,106, 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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