What powers probuildercalc.com?
Last seen Oct 2026 · 17 technologies across 13 categories
Advertising
Google AdSense
since Oct 2026
Analytics
Google Analytics
since Jul 2026
Snowplow Analytics
since Oct 2026
Cookie compliance
Funding Choices
since Oct 2026
Development
Turbopack
since Jul 2026
Font scripts
Google Font API
since Jul 2026
JavaScript frameworks
Miscellaneous
Webpack
since Jul 2026
PaaS
Vercel
since Jul 2026
Performance
Priority Hints
since Jul 2026
Programming languages
Node.js
since Jul 2026
Security
Tag managers
Google Tag Manager
since Aug 2026
UI frameworks
Tailwind CSS
since Jul 2026
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 61% phone
- 39% desktop
United States
India
Where the site's Chrome visitors come from, largest estimated audience first.
Core Web Vitals
| LCP | 1.5 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English
- CDN: Vercel
- Weight: 1.7 MB · 125 requests
- Structured data: JSON-LD
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- ProBuilderCalc
From the homepage's own structured data (Oct 2026).
Infrastructure
- Hosted on Amazon Web Services (216.198.79.1)
- DNS: Spaceship
- Email: no MX record returned
- Email security: SPF (soft fail), DNSSEC signed
- SSL: Let's Encrypt, RSA 2048, expires Dec 2026
- Common Crawl link graph: rank 86,134,934, 2 hosts
- Verified with: Pinterest
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- dropped core-js Oct 2026
- dropped Ezoic Oct 2026
- dropped FingerprintJS Oct 2026
- detected Funding Choices Oct 2026
- detected Google AdSense Oct 2026
- dropped ID5 Oct 2026
- dropped Prebid Oct 2026
- detected reCAPTCHA Oct 2026
- detected Snowplow Analytics Oct 2026
- dropped web-vitals Oct 2026
- detected core-js Aug 2026
- detected Ezoic Aug 2026
- detected FingerprintJS Aug 2026
- detected Google Tag Manager Aug 2026
- detected ID5 Aug 2026
- detected Prebid Aug 2026
- detected web-vitals Aug 2026