How many websites use Cloudflare?

StackPulse currently detects Cloudflare on 52,837 websites, which is 45.89% of the 115,150 domains in the index. The count is refreshed as the crawler re-scans the web.

How do I check whether a website uses Cloudflare?

Open the free StackPulse lookup, enter the domain and the infrastructure section will list Cloudflare if its scripts, headers or markup are present. Developers can call GET /v1/lookup/:domain.

Can I download a list of websites that use Cloudflare?

Yes. Lead Export filters the index by Cloudflare (optionally combined with other technologies) and streams the matching domains as CSV, up to 50,000 rows per file.

Cloudflare is a infrastructure technology. It ranks #1 of 7 infrastructure technologies by number of websites in the StackPulse index.

Infrastructure

Websites using Cloudflare

StackPulse detects Cloudflare on 52,837 websites — 45.89% of the 115,150 domains in the index — making it the #1 infrastructure technology we track. Updated October 27, 2026.

Websites detected

52,837

Share of index

45.89%

Rank in Infrastructure

#1 of 7

Indexed websites

115,150

Download all 52,837 Cloudflare websites as CSV

Top websites using Cloudflare

Ordered by traffic rank. Each profile shows the complete detected stack.

allbirds.com
with Shopify Plus, Stripe, PayPal, Shop Pay
12 tech
cloudflare.com
with Google Tag Manager, OneTrust
3 tech
twitter.com
1 tech
linkedin.com
1 tech
x.com
1 tech
vimeo.com
with Next.js, Google Fonts
3 tech
creativecommons.org
with Google Ads, GA4, WordPress
4 tech
w3.org
1 tech
zoom.us
with Google Tag Manager, Optimizely, OneTrust
4 tech
doi.org
with Amazon CloudFront, jQuery
3 tech
workers.dev
with Google Tag Manager, OneTrust
3 tech
sourceforge.net
with LinkedIn Insight Tag, Google Ads, Matomo, Universal Analytics
6 tech
cpanel.net
with Google Tag Manager, WordPress, VWO, jQuery
5 tech
who.int
with Google Tag Manager, Google Fonts
3 tech
shopify.com
with Shopify, Apple Pay, Shop Pay
4 tech
t.co
1 tech
discord.com
with Google Tag Manager, Google Fonts, jQuery, Webflow
5 tech
tinyurl.com
with Google Fonts
2 tech
discord.gg
with Google Tag Manager, Google Fonts, jQuery, Webflow
5 tech
wiley.com
with Adobe Experience Platform, Osano, Webflow
4 tech
example.com
1 tech
weebly.com
with Adobe Fonts, jQuery, reCAPTCHA
4 tech
cloudflare-dns.com
with Google Fonts
2 tech
plesk.com
with Google Tag Manager, WordPress, VWO, jQuery
8 tech
calendly.com
with Google Tag Manager, Amazon CloudFront, OneTrust
4 tech
dropcatch.com
with Amazon CloudFront
2 tech
ietf.org
1 tech
gitlab.com
with Nuxt, Optimizely, OneTrust, Marketo
5 tech
substack.com
with Express
2 tech
oup.com
1 tech
addtoany.com
1 tech
wired.com
with Google Tag Manager, Amazon CloudFront, OneTrust
4 tech
techcrunch.com
with Google Tag Manager, WordPress, HubSpot, Cloudflare Turnstile
6 tech
pages.dev
with Google Tag Manager, OneTrust
3 tech
hubspot.com
with HubSpot
2 tech
loc.gov
with Shopify, Adobe Experience Platform, jQuery
4 tech
sagepub.com
with PostHog, OneTrust, ASP.NET
4 tech
rfc-editor.org
with Matomo, Nuxt
3 tech
zendesk.com
with Google Tag Manager, Zendesk, Next.js, OneTrust
5 tech
publicnode.com
with Next.js, Google Fonts
3 tech
wpguardian.com
with Amplitude, Google Tag Manager, WordPress, jQuery
6 tech
wpguardian.io
with Amplitude, Google Tag Manager, WordPress, jQuery
5 tech
nist.gov
with Google Tag Manager, Drupal
3 tech
forter.com
with Google Tag Manager, WordPress, OneTrust, Forter
7 tech
hcaptcha.com
with hCaptcha, Webflow
3 tech
prnewswire.com
with Adobe Experience Platform, jQuery
3 tech
roku.com
with Google Tag Manager
2 tech
networkadvertising.org
with Google Ads, WordPress, Adobe Fonts, jQuery
5 tech
icanhazip.com
1 tech
readthedocs.io
1 tech
worldbank.org
with Fastly, Varnish
3 tech
vungle.com
with Google Ads, Google Tag Manager, WordPress, jQuery
6 tech
plos.org
with WordPress, Google Fonts, jQuery, HubSpot
5 tech
themeforest.net
with Google Tag Manager, Cookiebot
3 tech
statcounter.com
1 tech
rubiconproject.com
with Google Tag Manager, WordPress
3 tech
smartadserver.com
with Google Tag Manager, WordPress, Adobe Fonts, Google Fonts
7 tech
ico.org.uk
1 tech
onelink.me
with Google Tag Manager, WordPress, VWO, OneTrust
6 tech
thenai.org
with Google Ads, WordPress, Adobe Fonts, Google Fonts
6 tech

Technologies used together with Cloudflare

Websites using jQuery 25.23% of Cloudflare sites
Websites using Google Tag Manager 25.19% of Cloudflare sites
Websites using Google Fonts 21.97% of Cloudflare sites
Websites using WordPress 21.2% of Cloudflare sites
Websites using Google Ads 16.31% of Cloudflare sites
Websites using GA4 13.48% of Cloudflare sites
Websites using Next.js 5.51% of Cloudflare sites
Websites using Shopify 4.87% of Cloudflare sites

Other Infrastructure technologies

Websites using Amazon CloudFront 9,547 sites
Websites using Fastly 4,834 sites
Websites using Varnish 4,665 sites
Websites using Vercel 2,499 sites
Websites using Akamai 2,038 sites
Websites using Netlify 790 sites

Technology directory →

Frequently asked questions

How many websites use Cloudflare?: StackPulse currently detects Cloudflare on 52,837 websites, which is 45.89% of the 115,150 domains in the index. The count is refreshed as the crawler re-scans the web.
How do I check whether a website uses Cloudflare?: Open the free StackPulse lookup, enter the domain and the infrastructure section will list Cloudflare if its scripts, headers or markup are present. Developers can call GET /v1/lookup/:domain.
Can I download a list of websites that use Cloudflare?: Yes. Lead Export filters the index by Cloudflare (optionally combined with other technologies) and streams the matching domains as CSV, up to 50,000 rows per file.
What is Cloudflare?: Cloudflare is a infrastructure technology. It ranks #1 of 7 infrastructure technologies by number of websites in the StackPulse index.

Look up any domain by API

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curl -H "x-api-key: YOUR_KEY" \
  https://stackpulseapi.com/v1/lookup/allbirds.com

Read the API docs

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