Google certificate transparency search for checking certificates and HTTPS records.
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OFAC search tool for checking sanctions lists, entities, individuals, and compliance records.
AnalyzeID is a unified search tool for finding web pages, files, records, code, or internet intelligence.
Searchable public database related to suspected terrorism records and security research references.
OSINT.sh tool for checking historical DNS records and domain infrastructure changes.
A fast and multi-purpose DNS toolkit from ProjectDiscovery for running DNS probes, resolving records and filtering DNS responses.
Retrieve DNS records, subdomains, SSL certificates and WHOIS / RDAP data for a given website.
Domain monitoring tool for tracking DNS changes, records, and domain activity.
DDoSecrets project for searching and analyzing public-interest datasets and leaked records.
OSINT.sh tool for finding domains that share the same mail exchanger records.
API to search current and historical DNS records, current and historical WHOIS, technologies used by sites and whois search for phone, email, address,
Attack-surface and DNS intelligence platform for domains, subdomains, IPs, and historical records.
OSINT.sh tool for checking historical WHOIS records and domain ownership changes.
Verisign WHOIS lookup for checking domain registration records and registry information.
Hitch is a developer community or publication for programming discussions, news, tutorials, and help.
Open source tool that searches newly registered domain feeds to find typosquatting, IDN homograph, doppelganger and bitsquatting domains impersonating