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Securitytrails · Security

SecurityTrails / Subdomains of a domain

All subdomain labels SecurityTrails knows for a domain (subdomains[] holds the label only, prefix it to the domain) and subdomaincount. childrenonly limits to direct children; include_inactive adds ones no longer resolving.

Live data

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unverifiedRequest shape unavailableUnverified
Published API evidence
Public metadata only. Response bodies, credentials, and internal review notes are never displayed.

No verification date is claimed. No response capture is claimed.

Request parameters

  • children_only query · optional

    Only direct children.

  • include_inactive query · optional

    Include subdomains that no longer resolve.

No allowlisted official documentation or pricing reference is available.

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