Domain, IP & DNS Research

Verisign WHOIS lookup for checking domain registration records and registry information.

NERD IP reputation search for checking network entities, abuse data, and security signals.

Aware Online tool for searching websites, domains, indexed pages, and related OSINT clues.

Censys certificate search for exploring TLS certificates, domains, issuers, and transparency logs.

OSINT.sh certificate search for finding TLS certificates, domains, and certificate history.

Censys IPv4 search for finding exposed hosts, ports, services, and internet infrastructure.

OSINT.sh tool for checking historical DNS records and domain infrastructure changes.

OSINT.sh SSL check for testing whether a host appears vulnerable to Heartbleed.

OSINT.sh IP lookup for checking geolocation, ASN, network, and hosting information.

OSINT.sh online Nmap-style scanner for checking visible ports and network services.

OSINT.sh SSL check for testing whether a host appears vulnerable to POODLE.

OSINT.sh reverse domain lookup for finding related domains and infrastructure links.

OSINT.sh tool for finding websites connected by shared Google AdSense identifiers.

OSINT.sh tool for finding websites connected by shared Google Analytics tracking IDs.

OSINT.sh tool for finding domains and websites hosted on the same IP address.

OSINT.sh tool for finding domains that share the same mail exchanger records.

OSINT.sh tool for discovering subdomains connected to a target domain.

OSINT.sh tool for detecting a website's technology stack, frameworks, and services.