What powers thunderheadeng.com?
Last seen Sep 2026 · 49 technologies across 23 categories
Analytics
Caching
CDN
CMS
Databases
Ecommerce
Font scripts
JavaScript frameworks
JavaScript graphics
JavaScript libraries
LMS
Load balancers
Message boards
Miscellaneous
PaaS
Programming languages
Reverse proxies
Security
Static site generator
UI frameworks
Web frameworks
Web servers
AI Crawlers
Blocks 13 of 33 AI crawlers we track by name in its robots.txt. Checked Sep 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
The other 20 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
- ai.txt not found
Content Signals:
search=yes ai-train=no declared in robots.txt
- Sep 2026 claude-web added to robots.txt
- Sep 2026 petalbot added to robots.txt
- Sep 2026 googleother added to robots.txt
- Sep 2026 diffbot added to robots.txt
- Sep 2026 cohere-ai added to robots.txt
- Sep 2026 google-cloudvertexbot added to robots.txt
AI Crawlers
13 of 33 AI crawlers blocked
Standards: llms.txt, Content Signals
Audience
- 88% desktop
- 12% phone
Italy
United States
Indonesia
South Korea
India
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.06 / 10 · ranked #1,484,203 of all domains
43 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.2 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 700 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 0.7 MB · 39 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Cloudflare (104.21.91.207)
- DNS: Cloudflare DNS
- Email: no MX record returned, SPF names Google Workspace
- Email security: SPF (soft fail), DMARC reject
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Nov 2026
- Common Crawl link graph: rank 1,150,182, 11 hosts
- Verified with: Google, Rippling
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| training.thunderheadeng.com | 17 |
| cart.thunderheadeng.com | 16 |
| help.thunderheadeng.com | 16 |
| support.thunderheadeng.com | 16 |
| www.thunderheadeng.com | 16 |
| www2.thunderheadeng.com | 16 |
| store2.thunderheadeng.com | 13 |
| forum.thunderheadeng.com | 8 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Cloudflare Browser Insights Feb 2026
- detected HTTP/3 Feb 2026
- dropped Unpkg Nov 2025