SSL/TLS Certificates
325,744 of the 965,200 top sites in our Tranco top-1M census run Let's Encrypt (33.7%). A free, automated certificate authority that issues and renews SSL/TLS certificates for HTTPS. Detection is homepage-level HTML/header fingerprinting, so a site can run Let's Encrypt on other pages without it showing here.
Other ssl/tls certificates
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | mail.ru | #12 (Tranco) | Find emails |
| 2 | twitter.com | #17 (Tranco) | Find emails |
| 3 | wikipedia.org | #27 (Tranco) | Find emails |
| 4 | wordpress.org |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| tailscale.com | #1,205 | Amazon Route 53, Next.js, Sanity + 3 more | Find emails |
| namu.wiki | #1,211 | Amazon Route 53, Cloudflare edge/CDN | Find emails |
| xhaccess.com | #1,214 | Cloudflare, Google Analytics, Google Tag Manager + 2 more | Find emails |
| #43 (Tranco) |
| Find emails |
| 5 | x.com | #54 (Tranco) | Find emails |
| acesso.gov.br |
| #1,215 |
| Font Awesome, Google Fonts, OpenResty + 1 more |
| Find emails |
| lequipe.fr | #1,216 | reCAPTCHA | Find emails |
| cnnbrasil.com.br | #1,223 | Azure DNS, Google Tag Manager, Microsoft 365 + 4 more | Find emails |
| xhopen.com | #1,229 | Cloudflare, Google Analytics, Google Tag Manager + 2 more | Find emails |
| parklogic.com | #1,237 | Font Awesome, Google Fonts, Microsoft 365 + 10 more | Find emails |
| netcraze.io | #1,238 | Google Fonts | Find emails |
| franceinfo.fr | #1,241 | Akamai Edge DNS | Find emails |
| idealista.com | #1,244 | Amazon Route 53, DataDome, Microsoft 365 | Find emails |
| wiktionary.org | #1,248 | — | Find emails |
| attn.tv | #1,249 | Amazon Route 53, Cloudflare edge/CDN | Find emails |
| usnews.com | #1,255 | Akamai Bot Manager, Akamai Edge DNS, Envoy + 7 more | Find emails |
| stackexchange.com | #1,259 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 2 more | Find emails |
| zalando.de | #1,260 | Akamai Bot Manager, Amazon Route 53, Google Workspace + 1 more | Find emails |
| youporn.com | #1,263 | Amazon Route 53, DebugBear, Google Analytics + 4 more | Find emails |
| fmkorea.com | #1,264 | Akamai Bot Manager, Amazon Route 53, Cloudflare Turnstile + 1 more | Find emails |
| litnet.com | #1,265 | Bootstrap, Cloudflare, Cloudflare Bot Management + 10 more | Find emails |
| postgresql.org | #1,266 | Font Awesome, Nginx | Find emails |
| merkur.de | #1,268 | Google Tag Manager, Microsoft 365, Nginx + 1 more | Find emails |
| admin.ch | #1,269 | Akamai edge/CDN, Nuxt.js, imgix + 1 more | Find emails |
| kernel.org | #1,276 | Nginx | Find emails |
| glasvezelactiveren.nl | #1,290 | — | Find emails |
| b7510.com | #1,291 | Amazon Route 53, Nginx | Find emails |
Showing the first 10,000matches — add a filter to narrow.
From the Crawlora Website Tech Stack Dataset, a homepage-level fingerprint of a 965,200-domain Tranco top-1M census (run top1m-2026-08-20-full), snapshot August 21, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →