What is Cloudflare?

CDN

Cloudflare is a content delivery network (CDN): CDN, DDoS protection, and security services. Tech Stack Detector identifies Cloudflare on any website by analysing HTTP response headers and DNS records.

Cloudflare is a content delivery network (CDN) (CDN), detected on 247 websites in our index. See websites using Cloudflare ↓

CategoryCDN
Official sitecloudflare.com
Detection signals4 signals
In our index247 websites

How Tech Stack Detector detects Cloudflare

Cloudflare is matched from these signals during a single, ordinary page request. Each one contributes to the confidence score shown on a scan.

  • HeaderCF-Ray header is Cloudflare-specific
  • HeaderServer: cloudflare
  • HeaderCF-Cache-Status header
  • DNSCloudflare nameservers

Websites using Cloudflare

Recently scanned websites where we detected Cloudflare. Open one to see its full technology stack.

stalgea.com1 technologies · 27 min ago www.alcapone.dev5 technologies · 1 h ago nodejs.topperit.com.bd1 technologies · 2 h ago athar-progress.com2 technologies · 2 h ago glassthempress.com2 technologies · 2 h ago cedarland.site1 technologies · 2 h ago www.kip.com.tr2 technologies · 4 h ago uniexpressbulk.com2 technologies · 5 h ago tennisbump.com7 technologies · 5 h ago fusillosangiliano.it7 technologies · 6 h ago www.relate.kr13 technologies · 7 h ago villadoimperio.com4 technologies · 10 h ago haathmein.com4 technologies · 11 h ago vetohub.com6 technologies · 11 h ago jeztola.com6 technologies · 11 h ago www.terapirehberi.com8 technologies · 11 h ago getwinnr.com2 technologies · 12 h ago chittortech.in13 technologies · 12 h ago

View all websites using Cloudflare

Often used with Cloudflare

Technologies most frequently detected alongside Cloudflare across scanned websites.

Tailwind CSSUI Library91 sitesReactFramework79 sitesProgressive Web AppOther74 sitesGoogle FontsFont72 sitesNode.jsLanguage59 sitesNext.jsFramework53 sitesGoogle WorkspaceOther51 sitesBootstrapUI Library44 sites

Alternatives to Cloudflare

Other CDN technologies Tech Stack Detector detects: popular alternatives and related tools, most-detected first.

cdnjsCDN34 sitesjsDelivrCDN28 sitesFastlyCDN27 sitesAmazon CloudFrontCDN17 sitesAkamaiCDN14 sitesUNPKGCDN13 sitesGoogle Hosted LibrariesCDN7 sitesBunny.netCDN1 siteKeyCDNCDN

Compare Cloudflare

Side-by-side comparisons of Cloudflare with other CDN technologies.

Cloudflare vs cdnjs Cloudflare vs jsDelivr Cloudflare vs Fastly Cloudflare vs Amazon CloudFront Cloudflare vs Akamai

Popular technologies

The technologies most often detected across all websites scanned on Tech Stack Detector.

Google FontsFont215 sitesTailwind CSSUI Library170 sitesReactFramework165 sitesProgressive Web AppOther147 sitesPHPLanguage139 sitesNode.jsLanguage136 sitesNext.jsFramework124 sitesBootstrapUI Library119 sitesGoogle WorkspaceOther110 sitesGoogle Tag ManagerAnalytics88 sites

Frequently asked questions

What is Cloudflare?

Cloudflare is a content delivery network (CDN): CDN, DDoS protection, and security services. Tech Stack Detector identifies Cloudflare on any website by analysing HTTP response headers and DNS records. Its official website is https://cloudflare.com.

How can I tell if a website uses Cloudflare?

Enter any URL into Tech Stack Detector and it reports whether Cloudflare is present, with a confidence score and the exact evidence it matched. Detection is based on HTTP response headers and DNS records. No login or crawling of the site is required.

How many websites use Cloudflare?

Cloudflare has been detected on 247 websites in the public Tech Stack Detector scan index. This reflects sites that visitors have analysed here, not global market share.

What are some alternatives to Cloudflare?

Other CDN technologies Tech Stack Detector detects include cdnjs, jsDelivr, Fastly, Amazon CloudFront, Akamai and UNPKG. You can compare any of them side by side with Cloudflare.

Data last updated October 20, 2026 · based on 618 recently scanned websites.