← Company Database

What Technology Does CircleCI Use?

41 technologies detected on circleci.com

CircleCI uses 41 technologies on circleci.com, including Proofpoint, Zendesk, Amazon CloudFront. Origin infrastructure appears to be AWS, with Cloudflare CDN and Cloudflare edge signals. Storage signals include Amazon S3. Asset host signals include Cloudflare JS, Google Hosted Libraries. Infrastructure complexity: medium.

Business modelb2b saas
SaaS score81/100 · likely saas
Complexitymedium
NetworkAmazon.com, Inc. (AS16509)

Email Infrastructure

Proofpoint
Confirmed · 90%
Google Workspace
Probable · 72%
Mailchimp
Probable · 72%

Customer Support

Zendesk
Confirmed · 88%

Cdn

Amazon CloudFront
Confirmed · 86%

Security

Cloudflare
Confirmed · 86%

Advertising

DoubleClick
Probable · 78%
LinkedIn Insight Tag
Probable · 76%

Analytics

Google Analytics
Probable · 76%
amplitude
Probable · 70%

Tag Manager

Google Tag Manager
Probable · 76%

Javascript Library

jQuery
Probable · 70%

Javascript Framework

nextjs
Probable · 70%

Web Framework

Web App Manifest
Probable · 66%

Possible Signals

angular
Weak · 60%
datadog
Weak · 60%
facebook_pixel
Weak · 60%
google_ads
Weak · 60%
hotjar
Weak · 60%
hubspot
Weak · 60%
hubspot_marketing
Weak · 60%
linkedin_insight
Weak · 60%
marketo
Weak · 60%
reddit_pixel
Weak · 60%
Segment
Weak · 60%
ZoomInfo WebSights
Weak · 60%
Intercom
Weak · 58%
axios
Weak · 50%
cookiebot
Weak · 50%
do_not_sell
Weak · 50%
google_analytics4
Weak · 50%
google_fonts
Weak · 50%
gstatic
Weak · 50%
hubspot_forms
Weak · 50%
intersection_observer
Weak · 50%
jsdelivr
Weak · 50%
microsoft_clarity
Weak · 50%
recaptcha
Weak · 50%
us_privacy_api
Weak · 50%
zoominfo
Weak · 50%
HSTS
Weak · 40%

Commercial Signals

✓ Pricing page
✗ Contact sales
✓ Docs / API docs
✓ Public API
✓ Careers page
✗ E-commerce

GTM Stack

✓ CRM
✓ Marketing automation
✓ Analytics
✓ Advertising
✓ Customer support tool
✗ Scheduling tool
✓ Email marketing

Site Signals

✓ Viewport Meta (mobile)
✓ Web App Manifest (mobile)
✓ Global Privacy Control (privacy compliance)
✓ Apple Domain Verification (verification)
✓ Atlassian Domain Verification (verification)
✓ DocuSign Domain Verification (verification)
✓ Google Site Verification (verification)
✓ HubSpot Domain Verification (verification)
✓ GitHub (verified link)
✓ LinkedIn (verified link)
✓ US Privacy User Signal Mechanism (privacy compliance)

Presence

✓ en html lang
✓ de hreflang
✓ es hreflang
✓ ja hreflang
✓ ko hreflang
✓ ru hreflang
✓ zh hreflang
✓ ag locale path
✗ Apple app association
✗ Android asset links
✗ App Store link
✗ Google Play link

Infrastructure

Origin
AWS
CDN
Cloudflare
Edge
Cloudflare
Storage
Amazon S3
Asset hosts
Cloudflare JS, Google Hosted Libraries, cdnjs, jsDelivr, Meta CDN, Twitter CDN, unpkg
API endpoint
https://api.circleci.com
HSTS
Enabled · max-age 63072000 · includeSubDomains · preload
security.txt
Present · Hiring
llms.txt
Present

Provider Signals

Amazon Route 53 dns
high · 95% nameserver records
Amazon CloudFront cdn
high · 90% cloudfront signal, cloudfront asset url, technology detection
Proofpoint email
high · 90% mx records
AWS origin
high · 90% hosting inference
Amazon S3 storage
high · 88% s3 asset or endpoint
Cloudflare cdn
high · 86% cloudflare headers, cdn inference
Cloudflare edge
high · 86% cloudflare headers
DMARC Reject security
high · 86% dmarc record
HSTS IncludeSubDomains Preload security
high · 86% strict transport security header
Amazon.com, Inc. (AS16509) network
high · 85% asn lookup
HubSpot CMS Hub origin
medium · 84% hubspot cms hosting signal
HSTS security
medium · 80% strict transport security header
Cloudflare JS asset host
medium · 78% cloudflare asset url
AWS EC2 origin
medium · 78% aws network signal
DMARC security
medium · 78% dmarc record
SPF security
medium · 78% spf record
Apple Domain Verification verification
medium · 78% apple domain verification txt
Atlassian Domain Verification verification
medium · 78% atlassian domain verification txt
DocuSign Domain Verification verification
medium · 78% docusign domain verification txt
Google Site Verification verification
medium · 78% google site verification txt
HubSpot Domain Verification verification
medium · 78% hubspot domain verification txt
Google Hosted Libraries asset host
medium · 74% google hosted libraries asset url
cdnjs asset host
medium · 72% cdnjs asset url
jsDelivr asset host
medium · 72% jsdelivr asset url, technology detection
Meta CDN asset host
medium · 72% meta cdn asset url
Twitter CDN asset host
medium · 72% twitter cdn asset url
unpkg asset host
medium · 72% unpkg asset url
Amazon Oregon Region region
medium · 72% region code
DKIM google security
medium · 72% dkim selector
DKIM m1 security
medium · 72% dkim selector

DNS & Email

Nameservers
Amazon Route 53
Email provider
Proofpoint
SPF
v=spf1 include:spf.circleci.com ~all
DMARC policy
reject
DKIM selectors
google, m1
DKIM providers
Google Workspace, Mailchimp

Verification & Apps

✓ Apple Domain Verification
✓ Atlassian Domain Verification
✓ DocuSign Domain Verification
✓ Google Site Verification
✓ HubSpot Domain Verification
✗ Apple app association
✗ Android asset links
✗ App Store link
✗ Google Play link

Subdomains (9)

app.circleci.com Application
support.circleci.com Support system
docs.circleci.com Documentation
status.circleci.com Status page
blog.circleci.com Blog platform
api.circleci.com API endpoint
www.circleci.com
email.circleci.com
auth.circleci.com

Global Presence

AGAIASDEESFRGAGSHCJAKOMEPXRUTDTRUSWAWSZH

Social

Detected by scanning circleci.com — Last checked: June 2, 2026

More Companies

Airbyte airbyte.com Clio Cloud Based Legal Technology clio.com Billsby billsby.com BrightEdge brightedge.com Algolia algolia.com Abstract abstract.com
Research any company's tech stack with Huntr. $0.012 per lookup.
Get API Key →