What powers isdenver.org?
Last seen Sep 2026 · 33 technologies across 15 categories
Analytics
CDN
Databases
Editors
Font scripts
Hosting
JavaScript frameworks
JavaScript libraries
Miscellaneous
Programming languages
Security
Tag managers
Translation
Video players
Webmail
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 70% desktop
- 30% phone
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.39 / 10 · ranked #1,016,258 of all domains
41 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.3 s |
| INP | 125 ms |
| CLS | 0.4 |
| TTFB | 1300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English (United States)
- CDN: Cloudflare
- Weight: 3.5 MB · 123 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
- International School of Denver
- Founded: 1977
- Country: United States
From Wikidata (CC0).
Infrastructure
- Hosted on Cloudflare (104.17.71.73)
- DNS: GoDaddy DNS
- Email: Google Workspace
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Let's Encrypt, ECDSA P256, expires Dec 2026
- Common Crawl link graph: rank 7,843,263, 2 hosts
- Verified with: Adobe, Apple Business, Google, Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- detected Microsoft Clarity Sep 2026
- detected core-js Aug 2026
- detected Facebook Pixel Aug 2026
- detected VideoJS May 2026
- detected Stimulus Mar 2026
- dropped core-js Jan 2026
- dropped Facebook Pixel Jan 2026
- detected Crazy Egg Nov 2025
- detected Htmx Nov 2025