Data verified May 2026
ADYour product here. Reach security decision-makers.Launch a campaignKnock Description
Knock is a subdomain scan tool that helps you find subdomains of a given domain. It's a simple and easy-to-use tool that can be used to scan for subdomains, find vulnerabilities, and more.
Knock FAQ
Common questions about Knock including features, pricing, alternatives, and user reviews.
Knock is A subdomain scan tool that helps you find subdomains of a given domain. It is a Attack Surface solution designed to help security teams with Reconnaissance, Subdomain Enumeration.
Knock is a free Attack Surface tool. This makes it accessible for organizations of all sizes, from startups to enterprises. Visit https://github.com/guelfoweb/knock/ for download and installation instructions.
Popular alternatives to Knock include:
1.Cylana EASM - AI-powered EASM platform for digital asset discovery and monitoring. (Commercial)
2.crt.sh - Bash script for subdomain enumeration via crt.sh certificate transparency logs. (Free)
3.Findomain - A domain reconnaissance tool that automates subdomain discovery, port scanning, and monitoring with support for multiple data sources and notification integrations. (Free)
4.Amass - Amass is an open-source OWASP tool for comprehensive attack surface mapping and asset discovery through domain reconnaissance and subdomain enumeration. (Free)
5.censys-enumeration - A script to extract subdomains/emails for a given domain using SSL/TLS certificate dataset on Censys. (Free)
Compare all Knock alternatives at https://cybersectools.com/alternatives/knock
Knock is for security teams and organizations that need Reconnaissance, Subdomain Enumeration. It's particularly suitable for small to medium-sized teams looking for cost-effective solutions. Other Attack Surface tools can be found at https://cybersectools.com/categories/attack-surface
Have more questions? Browse our categories or search for specific tools.
