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Hash recovery service for checking password hashes and related encrypted password formats.

Python OSINT crawler for extracting URLs, files, endpoints, and related website data.

Website information page for traffic estimates, site metadata, and audience insights.

Internet intelligence tool for looking up ASN details, IP information, and BGP routing data.

Internet asset search engine for domains, hosts, certificates, and exposed services.

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

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

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

Maps who links to any domain using the open Common Crawl hyperlink graph. Free, no-signup referring-domain and competitor link-footprint lookups for d

Internet asset search engine for discovering exposed services, hosts, domains, and technologies.

IP intelligence tool for checking scan traffic, noisy hosts, and suspicious internet activity.

Hash search database for looking up password hashes and contributed recovery results.

Community hash-recovery platform for searching, submitting, and discussing password hash challenges.

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

IANA database listing top-level domains, registry operators, and root zone delegation data.

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

Research paper and dataset about internet-wide scanning and host discovery from 2012.

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

Unlimited Reverse DNS, Subdomain and Reverse CNAME lookups, also provides JSON APIs.

Free, no-login IP reputation lookup that aggregates up to 8 risk sources, flags residential vs datacenter, and profiles /24 C-block neighbors. Also of

Search engine for exposed services, misconfigurations, leaked data, and internet-facing systems.

Threat intelligence search platform for malware indicators, IPs, domains, URLs, and hashes.

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

Security lookup platform for scanning files, hashes, URLs, IPs, and domains against threat data.