// open source intelligence
Investigate anything online.
Free tools to check domains, websites, IP addresses, usernames, emails and photos. No sign-up.
Domain & Website
WHOIS / RDAP
Registrar, owner, registration and expiry dates.
DNS Lookup
A, AAAA, MX, TXT, NS, CNAME and SOA records.
Subdomain Finder
Subdomains from public SSL logs (Certificate Transparency).
SSL Certificates
Issued certificate history and issuers.
HTTP Headers
Response headers and security header score.
Is It Down?
Availability, status code and response time.
Website Technology
Detects CMS, server, framework and analytics.
Wayback Machine
First and latest archived version of a site.
robots.txt & Sitemap
Contents of robots.txt and sitemap.xml.
URL Unshortener
Follows every redirect of a short link.
SPF / DMARC / DKIM
Checks a domain's protection against email spoofing.
IP & Network
People & Accounts
Username Search
Checks whether an account exists on dozens of platforms.
Email Checker
Format, MX servers, disposable providers and Gravatar.
Gravatar Lookup
Public profile and avatar linked to an email.
Phone Number Lookup
Country, line type and formats.
Google dork generator
Advanced Google search queries.
Password Leak Check
Checks known breaches — your password never leaves your device.