Overview
Enumerate subdomains for a domain from crt.sh Certificate Transparency logs. Right-click a domain to start.
Enumerate Subdomains From Certificate Transparency Type a domain or right-click any selected domain on a page. The extension queries crt.sh and returns the set of subdomains that have had TLS certificates issued. WHAT IT DOES - Queries crt.sh for certificates matching the given domain - Deduplicates subdomains across CT entries - Displays up to 500 subdomains, alphabetically sorted - Copies the whole list to the clipboard on one click - Prefills with the current tab's hostname - Adds a right-click context menu entry on any selected text that looks like a domain HOW IT WORKS 1. Install the extension 2. Type a domain in the popup, or right-click a domain on a page 3. See the list of subdomains PRIVACY Only the root domain is sent to crt.sh when you click Lookup. Page content is never read. No telemetry. SUPPORT Email: support@cchk.info Privacy policy: https://extensions.cchk.info/subdomain-recon/privacy Built by Cloud Geeks, a division of Ganda Tech Services.
Details
- Version1.0.4
- UpdatedApril 27, 2026
- Size16.14KiB
- LanguagesEnglish
- DeveloperAshish GandaWebsite
18 Patel St Rouse Hill, NSW 2155 AUEmail
ash@eawesome.com.auPhone
+61 433 309 677 - TraderThis developer has identified itself as a trader per the definition from the European Union and committed to only offer products or services that comply with EU laws.
Privacy
This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes
Support
For help with questions, suggestions, or problems, visit the developer's support site
