Security Scanners & Resolvers

Microsoft tool for monitoring website search performance, indexing status, and SEO insights.

Columbus Project is an advanced subdomain discovery service with fast, powerful and easy to use API.

Open source intelligence toolkit for gathering and analyzing information from websites and online sources.

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

Free and open-source domain and infrastructure research toolkit combining DNS, RDAP, WHOIS, passive subdomain discovery, IP and ASN data, email authen

DNSStuff is a web tool for finding, checking, or analyzing online information related to domains, networks, and digital services.

DNSViz is a web tool for finding, checking, or analyzing online information related to domains, networks, and digital services.

Threat Intelligence API that detects if a IP address is associated with a VPN, Proxy, TOR or Bots.

Follow.net is a web tool for finding, checking, or analyzing online information related to domains, networks, and digital services.

FullHunt is an OSINT tool focused on identifying and protecting internet-exposed assets.

Infosniper is a web tool for finding, checking, or analyzing online information related to domains, networks, and digital services.

AI-powered DNS and email security scanner with SPF, DKIM, DMARC, DNSSEC checks and fix suggestions.

IP Geolocation API DB-IP is a web tool for finding, checking, or analyzing online information related to domains, networks, and digital services.

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

IP geolocation API providing city, country, timezone, ASN, and currency data from IP addresses.

is used to find the approximate geographic location of an IP address along with some other useful information including ISP, TimeZone, Area Code, Stat

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

Threat intelligence platform aggregating malicious IP and domain data from multiple security feeds with real-time reputation scoring and threat catego

Is a free platform offering network diagnostic tools (ping, traceroute, MTR, DNS, WHOIS, HTTP, etc.) tailored for ISPs and infrastructure professional

Majestic is a web tool for finding, checking, or analyzing online information related to domains, networks, and digital services.

MaxMind is a web tool for finding, checking, or analyzing online information related to domains, networks, and digital services.

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

OpenLinkProfiler is a web tool for finding, checking, or analyzing online information related to domains, networks, and digital services.

PageGlimpse is a web tool for finding, checking, or analyzing online information related to domains, networks, and digital services.