What powers v21com.org?
Last seen Sep 2026 · 15 technologies across 10 categories
Caching
CMS
Databases
JavaScript frameworks
JavaScript libraries
Miscellaneous
Performance
Programming languages
Web servers
WordPress plugins
AI Crawlers
Blocks 14 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-Extended Blocked
- GPTBot Blocked
- ImagesiftBot Blocked
- Webzio-Extended Blocked
Search and AI assistants
- Amazonbot Blocked
- OAI-SearchBot Blocked
- PerplexityBot Blocked
User-request fetchers
- ChatGPT-User Blocked
The other 19 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
- Oct 2026 cohere-ai added to robots.txt
- Oct 2026 diffbot added to robots.txt
- Oct 2026 claude-web added to robots.txt
- Oct 2026 perplexitybot added to robots.txt
- Oct 2026 anthropic-ai added to robots.txt
- Oct 2026 chatgpt-user added to robots.txt
AI Crawlers
14 of 33 AI crawlers blocked
Audience
- 100% phone
Indonesia
Where the site's Chrome visitors come from, largest estimated audience first.
Core Web Vitals
| LCP | 3.1 s |
| INP | 200 ms |
| CLS | 0 |
| TTFB | 1600 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: Indonesian
- CDN: Cloudflare
- Weight: 2.0 MB · 78 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- V21COM
From the homepage's own structured data (Oct 2026).
Infrastructure
- Hosted on Cloudflare (104.21.8.182, IPv6)
- DNS: Cloudflare DNS
- Email: no MX record returned
- SSL: Google Trust Services, ECDSA P256, expires Jan 2027
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted