What powers 
senf.app?
Last seen Jul 2026 · 19 technologies across 15 categories
Analytics
CDN
CMS
Font scripts
Hosting
JavaScript frameworks
JavaScript libraries
Marketing automation
Miscellaneous
Performance
Security
Static site generator
Tag managers
UI frameworks
Webmail
AI Crawlers
Restricts 14 of 33 AI crawlers we track by name in its robots.txt. Checked Oct 2026.
Training crawlers
- Applebot-Extended Restricted
- Bytespider Restricted
- CCBot Restricted
- ClaudeBot Restricted
- cohere-training-data-crawler Restricted
- Google-Extended Restricted
- GPTBot Restricted
- meta-externalagent Restricted
Search and AI assistants
- Amazonbot Restricted
- Claude-SearchBot Restricted
- OAI-SearchBot Restricted
- PerplexityBot Restricted
User-request fetchers
- ChatGPT-User Restricted
- Claude-User Restricted
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 found
- ai.txt not found
Content Signals:
search=yes ai-train=yes ai-input=yes declared in robots.txt
- Sep 2026 ccbot: Restricted (was Blocked)
- Sep 2026 claude-web: Restricted (was Blocked)
- Sep 2026 bytespider: Restricted (was Blocked)
- Sep 2026 meta-externalagent: Restricted (was Blocked)
- Sep 2026 anthropic-ai: Restricted (was Blocked)
- Sep 2026 applebot-extended: Restricted (was Blocked)
AI Crawlers
14 of 33 AI crawlers restricted
Standards: llms.txt, Content Signals
Open Page Rank
4.73 / 10 · ranked #290,773 of all domains
112 referring domains · OpenPageRank
Infrastructure
- Registered Oct 2018 (8 years) via 1&1 Internet SE, renews Oct 2027
- Hosted on Cloudflare (207.207.209.209)
- DNS: IONOS
- Email: Google Workspace
- Email security: SPF (hard fail), DMARC quarantine
- SSL: Google Trust Services, ECDSA P256, expires Nov 2026
- Common Crawl link graph: rank 2,925,101, 4 hosts
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026, registration from the registry's RDAP service. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| info.senf.app | 15 |
| senf.app | 15 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Astro Jul 2026
- dropped Firebase Jul 2026
- dropped Netlify Jul 2026
- dropped PWA Jul 2026
- dropped Radix UI Jul 2026
- dropped React Router Jul 2026
- dropped styled-components Jul 2026
- detected Hotjar Jun 2026
- detected IONOS Jun 2026
- dropped core-js May 2026
- dropped Howler.js May 2026
- dropped Prism May 2026
- dropped Sentry May 2026