What powers smarttaxcalc.in?

Last seen Aug 2026 · 10 technologies across 6 categories

Analytics

Google Analytics
since Jul 2026

CDN

Cloudflare
since Jul 2026

Miscellaneous

HTTP/3
since Jul 2026
Open Graph
since Jul 2026
Product Hunt
since Jul 2026
PWA
since Jul 2026

Performance

Priority Hints
since Jul 2026

Security

HSTS
since Jul 2026

Web frameworks

Blazor
since Jul 2026
Microsoft ASP.NET
since Jul 2026

AI Crawlers

Blocks 11 of 33 AI crawlers we track by name in its robots.txt. Checked Sep 2026.

Training crawlers

  • Applebot-Extended Blocked
  • Bytespider Blocked
  • CCBot Blocked
  • ClaudeBot Blocked
  • cohere-training-data-crawler Blocked
  • Diffbot Blocked
  • FacebookBot Blocked
  • Google-Extended Blocked
  • ImagesiftBot Blocked
  • meta-externalagent Blocked
  • GPTBot Allowed

Search and AI assistants

  • Amazonbot Blocked
  • OAI-SearchBot Allowed
  • PerplexityBot Allowed

User-request fetchers

  • ChatGPT-User Allowed
  • Perplexity-User Allowed

The other 17 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.

See who blocks each AI crawler across the web

AI Crawlers

11 of 33 AI crawlers blocked

Standards: llms.txt

Full breakdown

Infrastructure

  • Hosted on Cloudflare (104.21.7.94, IPv6)
  • DNS: Cloudflare DNS
  • Email: no MX record returned, SPF names Cloudflare Email Routing
  • Email security: SPF (soft fail), DMARC quarantine
  • SSL: Google Trust Services, ECDSA P256, expires Dec 2026

DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted

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