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Free and open-source domain and infrastructure research toolkit combining DNS, RDAP, WHOIS, passive subdomain discovery, IP and ASN data, email authen

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

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

Free AI domain generator with availability check and price comparison.

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

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

The site allows you to look up domain registration information (WHOIS) on the internet

Threat intelligence platform aggregating malicious IP and domain data from multiple security feeds with real-time reputation scoring and threat catego

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

Network diagnostic toolbox for DNS, MX, blacklist, SMTP, and domain health checks.

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

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.

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

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.

Energia-Buran Archive helps find books, reading material, archives, or public-domain educational texts.

Gun Violence Archive helps find books, reading material, archives, or public-domain educational texts.

Media Burn Archive helps find books, reading material, archives, or public-domain educational texts.