What powers zebrafish.org?
Last seen Sep 2026 · 8 technologies across 8 categories
Analytics
Ecommerce
Operating systems
PaaS
Programming languages
Web server extensions
Web servers
Webmail
AI Crawlers
Blocks 16 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
- Diffbot Blocked
- Google-Extended Blocked
- GPTBot Blocked
- ImagesiftBot Blocked
- meta-externalagent Blocked
- Webzio-Extended Blocked
Search and AI assistants
- Amazonbot Blocked
- OAI-SearchBot Blocked
- PerplexityBot Blocked
- YouBot Blocked
User-request fetchers
- ChatGPT-User Blocked
- meta-externalfetcher Blocked
The other 17 AI crawlers we track are not mentioned and stay allowed by default.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
16 of 33 AI crawlers blocked
Audience
- 86% desktop
- 14% phone
United States
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.76 / 10 · ranked #733,454 of all domains
54 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 1600 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Weight: 0.3 MB · 15 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on UONET (128.223.30.88, IPv6)
- DNS: Amazon Route 53
- Email: Google Workspace
- Email security: SPF (soft fail), no DMARC record
- SSL: Let's Encrypt, ECDSA P256, expires Nov 2026
- Common Crawl link graph: rank 732,599, 2 hosts
- Verified with: MailerLite
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.zebrafish.org | 8 |
| zebrafish.org | 8 |