Recently added to the directory

OSINT.sh tool for finding websites connected by shared Google AdSense identifiers.

OSINT.sh reverse domain lookup for finding related domains and infrastructure links.

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

OSINT.sh online Nmap-style scanner for checking visible ports and network services.

OSINT.sh IP lookup for checking geolocation, ASN, network, and hosting information.

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

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

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

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

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

Website search tool

aware-online.com

Aware Online tool for searching websites, domains, indexed pages, and related OSINT clues.

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

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

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

One-plus website information page for checking domains, technology, DNS, and site details.

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

Wappalyzer

wappalyzer.com

Technology lookup tool for detecting frameworks, CMS platforms, analytics, and website software.

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

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

Alexa

alexa.com

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

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

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

Cyberspace search engine for finding internet-connected assets, devices, and exposed services.

Internet asset intelligence platform for domains, IPs, certificates, and exposed infrastructure.