#1127·amass

Suggestion for Adding ip thc for passive subdomain enumeration

Author: HackingRepoCreated May 16, 2026Updated Sep 8, 2026

Hi,

i want you let to known, that https://ip.thc.org/api/v1/lookup/subdomains, example with

json
{"domain":"hackerone.com","page_state":"","limit":20}

it supports passive subdomain enumeration and returns

rust
hackerone.com
api.hackerone.com
docs.hackerone.com
mta-sts.forwarding.hackerone.com
gslink.hackerone.com
mta-sts.managed.hackerone.com
mta-sts.hackerone.com
a.ns.hackerone.com
b.ns.hackerone.com
support.hackerone.com
websockets.hackerone.com
www.hackerone.com

that can be integrated to owasp amass passive mode as a source also.