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Jsmon Subdomains

An API that returns known subdomains for any root domain, for bug bounty hunters, red teams and security researchers.

subdomains.jsmon.sh · Free plan

Visit subdomains.jsmon.sh ↗
would rather buy than build
Running since2026Launch year from the maker

Details

What it does
Security and passwords, Developer tools
Who it’s for
Developers
Pricing
Free plan, Subscription
$10 to $49
Works on
API
Tags
subdomain enumeration, recon, bug bounty, attack surface

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