Domains & Infrastructure – OSINT Resources – Intelligence Gathering Tools

About Domains & Infrastructure

Whois, DNS, CT logs, tech stacks, passive DNS.

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Domains & Infrastructure

Whois (who.is) — Simple whois lookup
SecurityTrails — Passive DNS, historical DNS
crt.sh — Certificate Transparency search
BuiltWith — Tech stack & trackers
URLScan — Scan/visualize websites
VirusTotal (URL/Domain) — Detections & relations
DNSTwist (Web) — Typosquat finder (web)
Censys Search — Hosts, certs, services
Shodan — Internet-exposed devices
ViewDNS — DNS toolbox and pivots
DNSlytics — Reverse DNS, ASNs, trackers