What powers 
hed.co?
Last seen Sep 2026 · 27 technologies across 18 categories
Analytics
CDN
CMS
Databases
Documentation
Font scripts
Hosting
JavaScript libraries
Miscellaneous
PaaS
Performance
Programming languages
Security
SEO
Video players
Webmail
WordPress plugins
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 Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 87% desktop
- 13% phone
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.41 / 10 · ranked #992,601 of all domains
37 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.8 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 1500 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English (United States)
- CDN: Cloudflare
- Weight: 23.2 MB · 55 requests
- WordPress theme: hed-theme · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Organisation
From the homepage's own structured data (Sep 2026).
Infrastructure
- Hosted on Cloudflare (104.19.154.92)
- DNS: GoDaddy DNS
- Email: Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Google Trust Services, ECDSA P256, expires Dec 2026
- Common Crawl link graph: rank 2,042,531, 2 hosts
- Verified with: Apple Business, DocuSign, Google, KnowBe4, Microsoft 365, Miro, OpenAI
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- detected Apple iCloud Mail Aug 2026
- detected Amazon SES Mar 2026
- dropped cdnjs Feb 2026
- dropped Drupal Feb 2026
- dropped FancyBox Feb 2026
- dropped Fastly Feb 2026
- dropped Font Awesome Feb 2026
- dropped Google Font API Feb 2026
- dropped Google Hosted Libraries Feb 2026
- dropped jQuery UI Feb 2026
- dropped Leadfeeder Feb 2026
- dropped MariaDB Feb 2026
- dropped Modernizr Feb 2026
- dropped Nginx Feb 2026
- dropped Pantheon Feb 2026
- dropped PWA Feb 2026
- detected Twitter Emoji (Twemoji) Feb 2026
- dropped Varnish Feb 2026
- detected Amazon S3 Jan 2026
- detected Amazon Web Services Jan 2026
- detected Cloudflare Bot Management Jan 2026
- detected Flickity Jan 2026
- detected HTTP/3 Jan 2026
- detected jQuery Migrate Jan 2026
- detected MailChimp Jan 2026
- detected MonsterInsights Jan 2026
- detected MySQL Jan 2026
- detected Priority Hints Jan 2026
- detected RSS Jan 2026
- detected The SEO Framework Jan 2026
- detected Typekit Jan 2026
- detected Vimeo Jan 2026
- detected WordPress Jan 2026
- dropped Amazon SES Dec 2025
- dropped Amazon Web Services Dec 2025