SSL/TLS Certificates
33,361 of the 1,000,000 top sites in our Tranco top-1M census run Sectigo (3.3%). A certificate authority that issues SSL/TLS certificates used to secure websites with HTTPS. Detection is homepage-level HTML/header fingerprinting, so a site can run Sectigo on other pages without it showing here.
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | github.com | #29 (Tranco) | Find emails |
| 2 | roblox.com | #73 (Tranco) | Find emails |
| 3 | nginx.com | #95 (Tranco) | Find emails |
| 4 | f5.com |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| cloudfly.vn | #161,320 | Cloudflare, Google Analytics, Google Fonts + 8 more | Find emails |
| ets-tender.kz | #161,378 | Fancybox, Google Fonts, Google Tag Manager + 4 more | Find emails |
| platipusgaming.com | #161,398 | Amazon Route 53, Nginx, Nuxt.js + 1 more | Find emails |
| #150 (Tranco) |
| Find emails |
| 5 | avast.com | #202 (Tranco) | Find emails |
| liveexpert.org | #161,420 | AddToAny, Cloudflare, Google Tag Manager + 9 more | Find emails |
| roanestate.edu | #161,428 | ASP.NET, Google Analytics, Google Fonts + 4 more | Find emails |
| engelhorn.de | #161,466 | Cloudflare edge/CDN, Google Tag Manager, Microsoft 365 + 4 more | Find emails |
| satel.net.ua | #161,491 | Apache, PHP, SweetAlert2 + 4 more | Find emails |
| fundacionaquae.org | #161,515 | AddToAny, Azure DNS, Bootstrap + 13 more | Find emails |
| kemenhub.go.id | #161,563 | Bootstrap, Google Analytics, Google Fonts + 7 more | Find emails |
| synlab.it | #161,599 | DataTables, Font Awesome, Google Fonts + 10 more | Find emails |
| justice.gov.il | #161,617 | Akamai Edge DNS, Cloudflare Bot Management, Cloudflare Turnstile + 1 more | Find emails |
| portovelho.ro.gov.br | #161,638 | Bunny Fonts, Font Awesome, Livewire + 6 more | Find emails |
| electrolux.pl | #161,639 | Akamai Bot Manager, Akamai Edge DNS, Akamai edge/CDN + 6 more | Find emails |
| starbucks.com.hk | #161,648 | Amazon CloudFront, Bootstrap, CSC (Digital Brand Services) + 8 more | Find emails |
| lovado.net | #161,687 | Amazon Route 53, Apache, Bootstrap + 12 more | Find emails |
| knjizare-vulkan.rs | #161,753 | Bootstrap, ConsentMo, Google Ads Conversion + 9 more | Find emails |
| nts.go.kr | #161,782 | Apache, jQuery, jQuery UI | Find emails |
| fazenda.df.gov.br | #161,802 | — | Find emails |
| bpt.me | #161,827 | Amazon Route 53, Font Awesome, Google Tag Manager + 3 more | Find emails |
| originalmarines.com | #161,829 | Apache, Cookiebot, Font Awesome + 5 more | Find emails |
| lupus-electronics.de | #161,898 | Consentmanager.net, Google Tag Manager, Microsoft 365 + 5 more | Find emails |
| thesunvegas.co.uk | #161,902 | Cloudflare Web Analytics, Cloudflare edge/CDN, Google Fonts + 2 more | Find emails |
| reska.id | #161,906 | Bootstrap, Font Awesome, Google Analytics + 5 more | Find emails |
| kulinarika.net | #161,918 | DoubleClick (Google Ads), Font Awesome, Google AdSense + 8 more | Find emails |
| ticaretsicil.gov.tr | #161,921 | Apache, Bootstrap, Fancybox + 6 more | 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 1,000,000-domain Tranco top-1M census (run top1m-2026-08-25-full-v2), snapshot August 25, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →