What powers clarke.k12.va.us?
Last seen Sep 2026 · 8 technologies across 5 categories
Analytics
Google Analytics
since Jan 2019
Font scripts
Google Font API
since Aug 2019
JavaScript libraries
Closure Library
since Oct 2023
Marked
since Jul 2026
Miscellaneous
Open Graph
since Sep 2022
Webmail
Google Workspace
since Aug 2022
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
- 78% desktop
- 22% phone
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.88 / 10 · ranked #1,804,217 of all domains
19 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English (United States)
- CDN: Google
- Weight: 6.9 MB · 120 requests
- Structured data: Microdata, OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Google (216.239.32.21)
- Email: Google Workspace
- Email security: SPF (soft fail), DMARC quarantine
- SSL: Google Trust Services, RSA 2048, expires Nov 2026
- Common Crawl link graph: rank 224,300, 10 hosts
- Verified with: Adobe, Google, KnowBe4, Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| bes.clarke.k12.va.us | 8 |
| cchs.clarke.k12.va.us | 8 |
| ces.clarke.k12.va.us | 8 |
| jwms.clarke.k12.va.us | 8 |
| www.clarke.k12.va.us | 8 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Google Sites Sep 2026
- detected Marked Jul 2026
- detected Closure Library Jan 2026