What powers 
ptlibrary.org?
Last seen Oct 2026 · 39 technologies across 19 categories
Analytics
Caching
CDN
CMS
Databases
Ecommerce
Font scripts
JavaScript libraries
Marketing automation
Miscellaneous
PaaS
Performance
Programming languages
Security
UI frameworks
Video players
Web servers
WordPress plugins
WordPress themes
AI Crawlers
Restricts 2 of 33 AI crawlers we track by name in its robots.txt. Checked Nov 2026.
Training crawlers
- GoogleOther Restricted
Search and AI assistants
- Applebot Restricted
The other 31 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt not found
- ai.txt not found
- Nov 2026 *: Restricted (was Allowed)
- Nov 2026 applebot added to robots.txt
- Nov 2026 googleother added to robots.txt
- Oct 2026 *: Allowed (was Restricted)
- Oct 2026 applebot removed from robots.txt
- Oct 2026 googleother removed from robots.txt
AI Crawlers
2 of 33 AI crawlers restricted
Audience
- 53% phone
- 47% desktop
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.65 / 10 · ranked #786,689 of all domains
41 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.8 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English (United States)
- CDN: Cloudflare
- Weight: 7.8 MB · 97 requests
- WordPress theme: genesis (child: genesis-sample) · all themes
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
From the homepage's own structured data (Oct 2026).
Infrastructure
- Hosted on Cloudflare (162.159.135.42)
- DNS: Network Solutions
- Email: Cisco Secure Email
- Email security: SPF (soft fail), no DMARC record
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Dec 2026
- Common Crawl link graph: rank 118,488, 6 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| ptlibrary.org | 30 |
| events.ptlibrary.org | 13 |
Full technology history →
Report an incorrect detection
Recent changes
- dropped Slick Jul 2026
- detected Twitter Emoji (Twemoji) Dec 2025