What powers sfponline.org?
Last seen Sep 2026 · 25 technologies across 13 categories
Analytics
CDN
Cloudflare
since Oct 2020
Sucuri
since Oct 2020
Google Workspace
since Aug 2022
Mailgun
since Sep 2023
Font scripts
Google Font API
since Oct 2017
Hosting panels
Plesk
since Oct 2020
JavaScript libraries
Highlight.js
since Jun 2018
Isotope
since Jun 2021
jQuery Migrate
since Jan 2019
PhotoSwipe
since Sep 2022
Select2
since Jun 2018
Swiper
since Sep 2022
Miscellaneous
PWA
since Aug 2022
Operating systems
Windows Server
since Jun 2018
UI frameworks
Video players
YouTube
since Apr 2018
Web frameworks
Microsoft ASP.NET
since Jan 2016
Web servers
Widgets
Facebook
since Jul 2020
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
- 50% phone
- 50% desktop
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.24 / 10 · ranked #1,212,481 of all domains
60 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 50 ms |
| CLS | 0.2 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- CDN: Cloudflare, Sucuri Firewall
- Weight: 7.6 MB · 130 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- St. Francis Preparatory School
- Founded: 1858
- Country: United States
From Wikidata (CC0).
Infrastructure
- Hosted on Cloudflare (104.18.28.238, IPv6)
- DNS: Cloudflare DNS
- Email: Google Workspace
- Email security: no SPF record, no DMARC record
- SSL: Let's Encrypt, ECDSA P256, wildcard, expires Nov 2026
- Common Crawl link graph: rank 534,524, 3 hosts
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| sfponline.org | 18 |
| www.sfponline.org | 18 |
| alumni.sfponline.org | 9 |
Full technology history →
Report an incorrect detection
Recent changes
- detected YouTube Nov 2025