What powers practical-science.com?
Last seen Oct 2026 · 36 technologies across 18 categories
Advertising
Analytics
CDN
CMS
Cookie compliance
Databases
Font scripts
JavaScript libraries
Miscellaneous
PaaS
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Performance
Programming languages
Security
Static site generator
Tag managers
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AI Crawlers
Blocks 18 of 33 AI crawlers we track by name in its robots.txt. Checked Oct 2026.
Training crawlers
- Applebot-Extended Blocked
- Bytespider Blocked
- CCBot Blocked
- ClaudeBot Blocked
- cohere-training-data-crawler Blocked
- Diffbot Blocked
- Google-CloudVertexBot Blocked
- Google-Extended Blocked
- GoogleOther Blocked
- GPTBot Blocked
- meta-externalagent Blocked
Search and AI assistants
- Amazonbot Blocked
- PetalBot Blocked
User-request fetchers
- ChatGPT-User Blocked
- Claude-User Blocked
- meta-externalfetcher Blocked
- MistralAI-User Blocked
- Perplexity-User Blocked
The other 15 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt found
- llms-full.txt found
- ai.txt not found
Content Signals:
search=yes ai-train=no declared in robots.txt
- Oct 2026 petalbot added to robots.txt
- Oct 2026 ccbot added to robots.txt
- Oct 2026 chatgpt-user added to robots.txt
- Oct 2026 bytespider added to robots.txt
- Oct 2026 applebot-extended added to robots.txt
- Oct 2026 claude-user added to robots.txt
AI Crawlers
18 of 33 AI crawlers blocked
Standards: llms.txt, llms-full.txt, Content Signals
Audience
- 75% desktop
- 21% phone
- 4% tablet
United Kingdom
United States
Australia
Hong Kong SAR China
Indonesia
Philippines
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
0.11 / 10 · ranked #87,229,971 of all domains
0 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.5 s |
| INP | 50 ms |
| CLS | 0.05 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English (United Kingdom)
- CDN: Cloudflare
- Weight: 1.6 MB · 58 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- Practical Science
From the homepage's own structured data (Oct 2026).
Infrastructure
- Hosted on Cloudflare (104.21.5.39, IPv6)
- DNS: Cloudflare DNS
- Email: no MX record returned
- Email security: SPF (soft fail), DMARC monitor only
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Dec 2026
- Common Crawl link graph: rank 38,992,752
- Verified with: OpenAI
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
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Recent changes
- detected Astro Oct 2026
- detected Cloudflare Oct 2026
- detected Cloudflare Browser Insights Oct 2026
- detected Funding Choices Oct 2026
- detected Google AdSense Oct 2026
- detected Google Font API Oct 2026
- detected HTTP/3 Oct 2026
- detected reCAPTCHA Oct 2026
- dropped 33Across Sep 2026
- dropped Adobe Audience Manager Sep 2026
- dropped Cloudflare Sep 2026
- dropped Cloudflare Bot Management Sep 2026
- dropped OpenX Sep 2026
- dropped Rubicon Project Sep 2026
- dropped Snowplow Analytics Sep 2026
- dropped TripleLift Sep 2026
- dropped HTTP/3 Aug 2026
- detected Cloudflare Jun 2026
- detected Cloudflare Bot Management Jun 2026
- detected GoDaddy CoBlocks Jun 2026
- detected 33Across May 2026
- dropped Custom Fonts May 2026
- dropped Google AdSense May 2026
- dropped Preact May 2026
- dropped reCAPTCHA May 2026
- dropped 33Across Apr 2026
- detected Criteo Apr 2026
- dropped GumGum Apr 2026
- detected Gutenberg Apr 2026
- detected Jetpack Apr 2026
- dropped Microsoft ASP.NET Apr 2026
- detected Priority Hints Apr 2026
- detected 33Across Feb 2026
- detected GumGum Feb 2026
- dropped 33Across Dec 2025
- dropped GumGum Dec 2025
- detected Twitter Emoji (Twemoji) Dec 2025