Security & WAF
4,094 of the 1,000,000 top sites in our Tranco top-1M census run reCAPTCHA Enterprise (0.4%). Google's paid, enterprise-tier bot-detection and risk-scoring service for protecting sites from automated abuse. Detection is homepage-level HTML/header fingerprinting, so a site can run reCAPTCHA Enterprise on other pages without it showing here.
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | snapchat.com | #123 (Tranco) | Find emails |
| 2 | scorecardresearch.com | #242 (Tranco) | Find emails |
| 3 | duolingo.com | #472 (Tranco) | Find emails |
| 4 | time.com |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| signatura.co | #827,532 | Amazon Route 53, Astro, Django + 11 more | Find emails |
| signaturesense.com | #827,534 | Amazon Route 53, Apache, Let's Encrypt + 4 more | Find emails |
| sineriz.com.uy | #827,807 | Google Analytics, Google Tag Manager, PHP + 2 more | Find emails |
| #526 (Tranco) |
| Find emails |
| 5 | ups.com | #658 (Tranco) | Find emails |
| sinsa.com.ni | #827,864 | Amazon CloudFront, Azure DNS, Google Tag Manager + 8 more | Find emails |
| sletplaats.be | #828,458 | Apache, Axios, Bootstrap + 11 more | Find emails |
| sletplaats.nl | #828,459 | Apache, Axios, Bootstrap + 12 more | Find emails |
| slothjob.net | #828,516 | Bootstrap, Font Awesome, Google Cloud DNS + 7 more | Find emails |
| smartchoiceagents.com | #828,681 | Bootstrap, Cloudflare, Drupal + 12 more | Find emails |
| smartcv.co | #828,695 | AOS, ASP.NET, Amazon CloudFront + 21 more | Find emails |
| smasheducation.com | #828,791 | ASP.NET, Font Awesome, Google Analytics + 14 more | Find emails |
| snapsharer.com | #828,988 | Amazon (ACM), Amazon Route 53, Bootstrap + 16 more | Find emails |
| socioesquadrao.com.br | #829,125 | ASP.NET, Amazon (ACM), Bluesky + 17 more | Find emails |
| sociofortaleza.com.br | #829,126 | ASP.NET, Adobe Fonts (Typekit), Amazon (ACM) + 11 more | Find emails |
| socioplus.com.ar | #829,128 | Bootstrap, Cloudflare, Google Analytics + 9 more | Find emails |
| soft-ia.com | #829,174 | AOS, Apache, Bootstrap + 12 more | Find emails |
| sportbras.com.br | #830,037 | Amazon CloudFront, Google Tag Manager, Let's Encrypt + 5 more | Find emails |
| superpaco.com | #831,608 | Amazon CloudFront, Google Tag Manager, Let's Encrypt + 4 more | Find emails |
| supersaas.co.uk | #831,629 | Amazon (ACM), Amazon Route 53, Apache + 6 more | Find emails |
| supersaas.es | #831,630 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 5 more | Find emails |
| surfalive.com.br | #831,729 | Azion, Google Analytics, Google Tag Manager + 5 more | Find emails |
| sushisom.net | #831,804 | Apache, Bootstrap, Font Awesome + 11 more | Find emails |
| svu.edu.in | #831,920 | ASP.NET, Bootstrap, Cloudflare + 17 more | Find emails |
| t-card.co.jp | #832,287 | Amazon CloudFront, Apache, Google Ads Conversion + 8 more | Find emails |
| talkgacha.com | #832,690 | Amazon Route 53, Google AdSense, Google Analytics + 9 more | Find emails |
| tapseries.io | #832,903 | Amazon Route 53, Apache, Bootstrap + 13 more | Find emails |
From the Crawlora Website Tech Stack Dataset, a homepage-level fingerprint of a 1,000,000-domain Tranco top-1M census (run top1m-2026-08-25-full-v2), snapshot August 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →