Domain, IP & DNS Research

Google certificate transparency search for checking certificates and HTTPS records.

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

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

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

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

Domain monitoring tool for tracking DNS changes, records, and domain activity.

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

Shodan InternetDB lookup for checking open ports, vulnerabilities, tags, and host data by IP.

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

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

OSINT search engine for exposed assets, IPs, domains, certificates, and network data.

Web vulnerability search engine for finding reported security issues across websites.

Attack-surface and DNS intelligence platform for domains, subdomains, IPs, and historical records.

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

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

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

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

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

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

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

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

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

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

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