Data verified May 2026
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Generates permutations, alterations and mutations of subdomains and then resolves them This tool is designed to help security researchers and penetration testers to identify potential subdomains and IP addresses that can be used to launch attacks. It can be used to: * Generate permutations of subdomains * Alter and mutate subdomains * Resolve subdomains and IP addresses This tool is useful for identifying potential vulnerabilities and testing the security of a network. It is available on GitHub and can be used for free.
altdns FAQ
Common questions about altdns including features, pricing, alternatives, and user reviews.
altdns is A tool for generating permutations, alterations and mutations of subdomains and resolving them. It is a Attack Surface solution designed to help security teams with Reconnaissance.
altdns is a free Attack Surface tool. This makes it accessible for organizations of all sizes, from startups to enterprises. Visit https://github.com/infosec-au/altdns/ for download and installation instructions.
Popular alternatives to altdns include:
1.Censys Internet Map - Internet intelligence platform for asset discovery and attack surface mapping (Commercial)
2.Matos Automated Attack Surface Management - Automated ASM tool for multi-cloud environments with continuous asset discovery (Commercial)
3.Palo Alto Networks Cortex Xpanse - Active attack surface mgmt solution for discovering & remediating unknown risks (Commercial)
4.Zerocopter Recon - External attack surface mapping service to discover exposed digital assets (Commercial)
5.ConnectSecure Attack Surface Scanning - External attack surface scanning for MSPs to identify vulnerabilities (Commercial)
Compare all altdns alternatives at https://cybersectools.com/alternatives/altdns
altdns is for security teams and organizations that need Reconnaissance. 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
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