What powers heritagelib.org?
Last seen Sep 2026 · 30 technologies across 19 categories
Advertising
Analytics
CDN
CMS
Databases
Font scripts
JavaScript frameworks
JavaScript libraries
Miscellaneous
Mobile frameworks
PaaS
Performance
Programming languages
Security
Segmentation
UI frameworks
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
- 70% desktop
- 30% phone
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.06 / 10 · ranked #1,491,269 of all domains
44 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.8 s |
| CLS | 0.05 |
| TTFB | 3200 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English (United States)
- CDN: Fastly
- Weight: 7.7 MB · 162 requests
- WordPress theme: divi (child: divi-child) · all themes
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Fastly (151.101.2.159)
- DNS: r4l.com
- Email: Google Workspace
- Email security: SPF, no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 781,565, 2 hosts
DNS records as swept Sep 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- dropped WP Rocket Aug 2026
- detected Adobe Audience Manager Jul 2026
- detected Bootstrap Jul 2026
- detected core-js Jul 2026
- detected Facebook Pixel Jul 2026
- detected Google Analytics Jul 2026
- detected jQuery Jul 2026
- detected jQuery Migrate Jul 2026
- detected jQuery Mobile Jul 2026
- detected jQuery UI Jul 2026
- detected React Jul 2026
- detected React Router Jul 2026
- detected reCAPTCHA Jul 2026
- detected theTradeDesk Jul 2026
- detected Underscore.js Jul 2026
- detected YouTube Apr 2026