Subdomain Takeover Solutions & Remediation Directory
Browse verified dangling DNS vulnerability signatures across major cloud hosts, CDNs, PaaS, and CMS platforms. Every entry contains live CLI probe commands, CVSS 3.1 exploit vectors, and multi-provider Terraform fixes.
Verified Vulnerable Cloud Services (50)
Phase 1 SSG RolloutAmazon Web Services S3
Response signature: "NoSuchBucket" (404 Not Found)
GitHub Pages
Response signature: "There isn't a GitHub Pages site here" (404 Not Found)
Heroku App
Response signature: "No such app" (404 Not Found)
Microsoft Azure App Service
Response signature: "404 Web Site not found" (404 Not Found)
AWS CloudFront
Response signature: "NoSuchDistribution" (403 Forbidden)
AWS Elastic Beanstalk
Response signature: "NoSuchEnvironment" (NXDOMAIN / 404)
Fastly CDN
Response signature: "Fastly error: unknown domain" (404 Not Found)
Shopify Storefront
Response signature: "Sorry, this shop is currently unavailable" (404 Not Found)
Surge.sh
Response signature: "project not found" (404 Not Found)
Zendesk Help Center
Response signature: "Help Center Closed" (404 Not Found)
Readme.io
Response signature: "Project doesnt exist yet" (404 Not Found)
Ghost CMS (Ghost(Pro))
Response signature: "The thing you were looking for is gone" (404 Not Found)
Atlassian Statuspage
Response signature: "Status page not found" (404 Not Found)
Pantheon Hosting
Response signature: "404 Unknown Site" (404 Not Found)
WordPress.com
Response signature: "Do you want to register this domain?" (404 Not Found)
Tumblr
Response signature: "There's nothing here" (404 Not Found)
Vercel Edge Platform
Response signature: "404: NOT_FOUND" (404 Not Found)
Netlify
Response signature: "Not Found - Request ID" (404 Not Found)
Firebase Hosting
Response signature: "Site Not Found" (404 Not Found)
Bitbucket Cloud Pages
Response signature: "Repository not found" (404 Not Found)
HubSpot Landing Pages
Response signature: "Domain Not Found in HubSpot" (404 Not Found)
Unbounce Landing Pages
Response signature: "The requested URL was not found on this server" (404 Not Found)
Cargo Collective
Response signature: "404 Not Found" (404 Not Found)
Help Scout Docs
Response signature: "No settings were found for this company" (404 Not Found)
Webflow Hosting
Response signature: "The page you are looking for doesn't exist or has been moved" (404 Not Found)
Strikingly
Response signature: "page not found" (404 Not Found)
LaunchRock
Response signature: "It looks like you may have taken a wrong turn" (404 Not Found)
Leadpages
Response signature: "Double check that you have the right web address" (404 Not Found)
Big Cartel
Response signature: "404 Not Found" (404 Not Found)
Campaign Monitor Landing Pages
Response signature: "Double check the URL or try again" (404 Not Found)
UserVoice Feedback
Response signature: "This UserVoice instance is no longer active" (404 Not Found)
Salesforce Desk.com (Decommissioned)
Response signature: "Please contact support" (404 Not Found)
Feedpress
Response signature: "The feed has not been found" (404 Not Found)
Alchemer (SurveyGizmo)
Response signature: "data-html-type="survey-not-found"" (404 Not Found)
Acquia Cloud Drupal
Response signature: "Site not found on Acquia Cloud" (404 Not Found)
Aerobatic Hosting
Response signature: "Aerobatic App Not Found" (404 Not Found)
Agile CRM Landing Pages
Response signature: "Sorry, this page is not available" (404 Not Found)
Google Cloud Apigee Edge
Response signature: "classification":"UNKNOWN_HOST"" (404 Not Found)
CenturyLink AppFog (Decommissioned)
Response signature: "AppFog - No such app" (404 Not Found)
Bitly Branded Short Domains
Response signature: "custom domain is not configured" (404 Not Found)
Brightcove Video Cloud Gallery
Response signature: "Account not found or inactive" (404 Not Found)
Cloudflare Pages
Response signature: "404 | Project Not Found" (404 Not Found)
Fly.io App Platform
Response signature: "404 Not Found - Fly.io" (404 Not Found)
GitBook Documentation
Response signature: "Domain not found - GitBook" (404 Not Found)
Hatena Blog
Response signature: "404 Blog is not found" (404 Not Found)
Helpshift Customer Support
Response signature: "Helpshift instance does not exist" (404 Not Found)
Kinsta Managed WordPress
Response signature: "No site found for this domain" (404 Not Found)
Render Cloud Platform
Response signature: "Render: Not Found" (404 Not Found)
Tictail (Decommissioned)
Response signature: "Building a shop on Tictail" (404 Not Found)
Smartling Translation Proxy
Response signature: "Smartling Translation Proxy Error" (404 Not Found)
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