What powers 
zenflowchart.com?
Last seen Sep 2026 · 25 technologies across 16 categories
Analytics
CDN
Databases
Development
Font scripts
Issue trackers
JavaScript frameworks
JavaScript libraries
Miscellaneous
PaaS
Page builders
Payment processors
Security
Tag managers
UI frameworks
Webmail
AI Crawlers
Blocks all crawlers by default in robots.txt (User-agent: *). Checked Nov 2026.
Training crawlers
- AI2Bot Blocked
- Applebot-Extended Blocked
- Bytespider Blocked
- CCBot Blocked
- ClaudeBot Blocked
- cohere-training-data-crawler Blocked
- FacebookBot Blocked
- Google-Extended Blocked
- GoogleOther Blocked
- GPTBot Blocked
- img2dataset Blocked
- meta-externalagent Blocked
- Webzio-Extended Blocked
Search and AI assistants
- Amazonbot Blocked
- DuckAssistBot Blocked
- YouBot Blocked
The other 17 AI crawlers we track are not mentioned and are blocked by the catch-all rule (User-agent: *).
- robots.txt found
- llms.txt not found
- ai.txt not found
- Oct 2026 applebot-extended added to robots.txt
- Oct 2026 claudebot added to robots.txt
- Oct 2026 ccbot added to robots.txt
- Oct 2026 bytespider added to robots.txt
- Oct 2026 cohere-ai added to robots.txt
- Oct 2026 * added to robots.txt
AI Crawlers
All crawlers blocked
Audience
- 100% desktop
Vietnam
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
4.76 / 10 · ranked #271,525 of all domains
205 referring domains · OpenPageRank
Core Web Vitals
| LCP | 3.7 s |
| INP | 125 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Infrastructure
- Registered Nov 2018 (7 years) via Squarespace Domains II LLC, renews Nov 2026
- Hosted on Squarespace (198.49.23.144)
- DNS: Squarespace DNS
- Email: no MX record returned
- SSL: Google Trust Services, ECDSA P256, expires Nov 2026
- Common Crawl link graph: rank 2,720,682, 3 hosts
DNS records as swept Nov 2026, certificate as seen Sep 2026, registration from the registry's RDAP service. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| app.zenflowchart.com | 20 |
| www.zenflowchart.com | 11 |