Slash Mark - Subdomain Finder icon

Slash Mark - Subdomain Finder

by Slash Mark IT Solution (OPC) Pvt Ltd

v3.8.2 Updated Nov 23, 2025 1.35MiB
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Description

This extension helps security researchers, developers, and power users quickly identify subdomains belonging to the website currently open in the browser. With a single click, it performs a fast DNS-over-HTTPS scan to detect commonly used subdomains and potential hidden assets linked to the active domain. Results appear instantly in a clean and organized interface, making it easy to analyze a site’s online footprint. Designed for efficiency, privacy, and accuracy, the tool performs all lookups securely without exposing browsing activity. Ideal for reconnaissance, bug bounty workflows, and domain analysis during everyday web exploration
Slash Mark - Subdomain Finder screenshot 1Slash Mark - Subdomain Finder screenshot 2Slash Mark - Subdomain Finder screenshot 3

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Permissions (2)

Permissions

storage Can store data locally in your browser tabs Can see your open tabs and their URLs

Details

Version 3.8.2
Updated Nov 23, 2025
Size 1.35MiB
First Seen Mar 29, 2026

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