What powers zenbu.org?
Last seen Sep 2026 · 15 technologies across 12 categories
Advertising
Analytics
CDN
Font scripts
JavaScript frameworks
Miscellaneous
Performance
Programming languages
Security
Tag managers
Web frameworks
Webmail
AI Crawlers
Blocks 6 of 33 AI crawlers we track by name in its robots.txt. Checked Sep 2026.
Training crawlers
- CCBot Blocked
- ClaudeBot Blocked
- GPTBot Blocked
- meta-externalagent Blocked
Search and AI assistants
- Amazonbot Blocked
- PetalBot Blocked
The other 27 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
AI Crawlers
6 of 33 AI crawlers blocked
Open Page Rank
4.69 / 10 · ranked #357,108 of all domains
168 referring domains · OpenPageRank
Page
- Language: English
- CDN: Cloudflare
- Weight: 1.4 MB · 83 requests
- Structured data: OpenGraph
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Cloudflare (104.21.7.36, IPv6)
- DNS: Cloudflare DNS
- Email: Google Workspace
- Email security: SPF (hard fail), DMARC reject, DNSSEC signed
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Dec 2026
- Common Crawl link graph: rank 7,033,847, 12 hosts
- Verified with: Google
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| ca.zenbu.org | 15 |
| au.zenbu.org | 14 |
Full technology history →
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Recent changes
- dropped Google Analytics Sep 2026
- detected Priority Hints Sep 2026