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Open source tool that searches newly registered domain feeds to find typosquatting, IDN homograph, doppelganger and bitsquatting domains impersonating

Enumerate available domains generated modifying the original domain name through different cybersquatting techniques

is a website that will help you discover hosts related to a specific domain.

OSINT tool for collecting domain, IP, ASN, and infrastructure intelligence from multiple sources.

Domain intelligence tool for researching WHOIS data, ownership patterns, and connected domains.

DARPA research program that developed domain-specific search methods for hard-to-index web content.

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

Free AI domain generator with availability check and price comparison.

Open-source email forwarding and hosting for custom domains, with unlimited aliases, standards-based mail access, and encrypted-storage options.

Finds email addresses, domains, and URLs connected to a company or domain for OSINT and sales research.

is an IP address and domain name based researching websites that offers multiple services such as Reverse DNS Lookup, Whois, and AS Macros.

SimilarSites

similarsites.com

Discovery tool for finding websites similar to a domain, brand, or online service.

Open-source email alias service for receiving and replying without exposing a personal address, with apps, extensions, custom domains, and self-hosting support.

SitesLike

siteslike.com

Website discovery tool for finding similar websites by category, topic, or domain.

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

OSINT.sh tool for checking historical WHOIS records and domain ownership changes.

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

WHOIS intelligence service for searching domain ownership, history, and registrar data.

Is a free platform offering network diagnostic tools (ping, traceroute, MTR, DNS, WHOIS, HTTP, etc.) tailored for ISPs and infrastructure professional

Aware Online guide with website investigation tools for domains, pages, metadata, and infrastructure.

SEO Chat Tools is a web tool for finding, checking, or analyzing online information related to domains, networks, and digital services.

Cipher387's large OSINT tool collection covering social media, domains, people, maps, and more.

CentralOps collection of DNS, WHOIS, traceroute, email, and network lookup tools.

uses advanced search operators (Google Dorks) to find juicy information about target websites.