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Technical & Infrastructure

Domain / IP / DNS

Domain, IP-address and DNS research resources for examining infrastructure and historical records.

51 listings in this category.

domainbigdata (opens in a new tab)domainbigdata.comA resource for domain, IP-address or DNS research; check the provider for supported inputs and coverage.Domain Codex (opens in a new tab)domaincodex.comA resource for domain, IP-address or DNS research; check the provider for supported inputs and coverage.dnslytics (opens in a new tab)dnslytics.comA resource for domain, IP-address or DNS research; check the provider for supported inputs and coverage.SecurityTrails (opens in a new tab)securitytrails.comDomain and DNS research resources, including historical infrastructure records.Shodan (opens in a new tab)shodan.ioA search service for internet-visible devices and services, based on collected observations.Internetdb.shodan.io (opens in a new tab)internetdb.shodan.ioA search service for internet-visible devices and services, based on collected observations.GreyNoise Intelligence (opens in a new tab)greynoise.ioA resource for domain, IP-address or DNS research; check the provider for supported inputs and coverage.FOFA (opens in a new tab)fofa.soAn internet-asset search service for researching observed hosts and services.zoomeye (opens in a new tab)zoomeye.orgAn internet-asset search resource for researching observed services and devices.Censys (opens in a new tab)censys.ioA search and research service for internet infrastructure and certificates.ViewDNS.info (opens in a new tab)viewdns.infoDNS and network lookup utilities for researching domains and IP addresses.Internet Census 2012 (opens in a new tab)census2012.sourceforge.netA resource for domain, IP-address or DNS research; check the provider for supported inputs and coverage.HTTP linkONYPHE (opens in a new tab)onyphe.ioA resource for domain, IP-address or DNS research; check the provider for supported inputs and coverage.IPLeak (opens in a new tab)ipleak.netA resource for domain, IP-address or DNS research; check the provider for supported inputs and coverage.Censys Certificates (opens in a new tab)censys.ioA search and research service for internet infrastructure and certificates.Censys IPv4 (opens in a new tab)censys.ioA search and research service for internet infrastructure and certificates.Robtex (opens in a new tab)robtex.comA resource for domain, IP-address or DNS research; check the provider for supported inputs and coverage.Website search tool (opens in a new tab)aware-online.comWebsite search tool provides a named search or lookup entry point; check supported inputs and the source coverage before relying on a match.Wappalyzer (opens in a new tab)wappalyzer.comA website technology-identification resource.photon (opens in a new tab)pypi.orgPython package information for photon, including installation and project-documentation links.Technology Lookup (opens in a new tab)osint.shTechnology Lookup provides a named search or lookup entry point; check supported inputs and the source coverage before relying on a match.BuiltWith Technology Lookup (opens in a new tab)builtwith.comA website technology lookup service for identifying detected site technologies.NMAP Online (opens in a new tab)osint.shA map resource titled NMAP Online; inspect its layers, geographic coverage and observation dates.Nmap Checker Tool (opens in a new tab)shadowcrypt.netA map resource titled Nmap Checker Tool; inspect its layers, geographic coverage and observation dates.Free online network tools (opens in a new tab)centralops.netA resource about Free online network tools; open the source to check its methodology, context and current scope.Google Transparency Report (opens in a new tab)transparencyreport.google.comGoogle's web search for discovering indexed pages and source material.Certificate Search (opens in a new tab)osint.shCertificate Search provides a named search or lookup entry point; check supported inputs and the source coverage before relying on a match.CRT (opens in a new tab)crt.shA certificate-transparency search interface for finding publicly logged certificates.LeakIX (opens in a new tab)leakix.netA resource for domain, IP-address or DNS research; check the provider for supported inputs and coverage.DomainWatch (opens in a new tab)domainwat.chA resource for domain, IP-address or DNS research; check the provider for supported inputs and coverage.URL and website scanner (opens in a new tab)urlscan.ioA website scanning and scan-search service for examining recorded page behavior and connections.dnsdumpster (opens in a new tab)dnsdumpster.comA domain research service for discovering DNS and associated infrastructure clues.SimilarWeb (opens in a new tab)similarweb.comA website and market analytics service; read metric definitions and the reporting period.Alexa (opens in a new tab)alexa.comA resource for domain, IP-address or DNS research; check the provider for supported inputs and coverage.Website Information (opens in a new tab)one-plus.github.ioA resource for domain, IP-address or DNS research; check the provider for supported inputs and coverage.IP search - Network Entity Reputation Database (opens in a new tab)nerd.cesnet.czIP search - Network Entity Reputation Database provides a named search or lookup entry point; check supported inputs and the source coverage before relying on a match.Reverse Domain (opens in a new tab)osint.shA resource for domain, IP-address or DNS research; check the provider for supported inputs and coverage.Poodle Check (opens in a new tab)osint.shA resource for domain, IP-address or DNS research; check the provider for supported inputs and coverage.Heartbleed Check (opens in a new tab)osint.shA resource for domain, IP-address or DNS research; check the provider for supported inputs and coverage.DNS History Lookup (opens in a new tab)osint.shDNS History Lookup provides a named search or lookup entry point; check supported inputs and the source coverage before relying on a match.Subdomain Finder (opens in a new tab)osint.shSubdomain Finder provides a named search or lookup entry point; check supported inputs and the source coverage before relying on a match.Reverse IP Lookup (opens in a new tab)osint.shReverse IP Lookup provides a named search or lookup entry point; check supported inputs and the source coverage before relying on a match.Reverse Google Adsense (opens in a new tab)osint.shA resource for domain, IP-address or DNS research; check the provider for supported inputs and coverage.Reverse Google Analytics (opens in a new tab)osint.shA resource for domain, IP-address or DNS research; check the provider for supported inputs and coverage.Reverse MX Record (opens in a new tab)osint.shA resource for domain, IP-address or DNS research; check the provider for supported inputs and coverage.IP GEO Location Lookup (opens in a new tab)osint.shIP GEO Location Lookup provides a named search or lookup entry point; check supported inputs and the source coverage before relying on a match.IANA — Root Zone Database (opens in a new tab)iana.orgA record or reference collection titled IANA — Root Zone Database; check the issuing source, record definitions and covered dates.Punkspider (opens in a new tab)punkspider.orgA resource for domain, IP-address or DNS research; check the provider for supported inputs and coverage.metabigor (opens in a new tab)github.comThe j3ssie/metabigor repository, listed for domain and network research; read its documentation for supported tasks and setup.Spyse (opens in a new tab)spyse.comA resource for domain, IP-address or DNS research; check the provider for supported inputs and coverage.Netlas.io (opens in a new tab)netlas.ioA resource for domain, IP-address or DNS research; check the provider for supported inputs and coverage.

Choosing a resource

  • Choose a live DNS check or historical record according to the question you are investigating.
  • Record timestamps and distinguish an observed address from confirmed ownership.

Network infrastructure research; live, passive and historical data have different coverage. Check the source for current features, access requirements, and costs. Selection and maintenance policy.