bing.com
Microsoft tool for monitoring website search performance, indexing status, and SEO insights.
Directory
Security Scanners & Resolvers
Explore Security Scanners & Resolvers resources in Cybersecurity.
github.com
Columbus Project is an advanced subdomain discovery service with fast, powerful and easy to use API.
argos-osint.com
Open source intelligence toolkit for gathering and analyzing information from websites and online sources.
crawlgraph.com
CrawlGraph is a backlink and competitor-gap tool built on Common Crawl snapshots. It returns referring domains with authority fields and compares competitors through a link-gap endpoint. It does not run a live daily crawler. The free website query returns five referring domains without signup; paid plans unlock full lists, CSV/JSON export, gap analysis and API access.
digga.dev
digga is a free domain and infrastructure research tool that looks up DNS records, RDAP and WHOIS data, subdomains, IP details and email authentication in one report. It supports many DNS record types and passive subdomain enumeration. The project is open source under AGPL 3.0 with no accounts or paywalls.
dnsstuff.com
DNSStuff is a web tool for finding, checking, or analyzing online information related to domains, networks, and digital services.
dnsviz.net
DNSViz is a tool for visualizing the status of a DNS zone. It was designed to help understand and troubleshoot deployment of the DNS Security Extensions, providing a visual analysis of the DNSSEC authentication chain and resolution path and listing configuration errors it detects.
focsec.com
Focsec is an API for detecting VPNs, proxies, TOR and bot traffic. It provides IP check data for protecting applications, identifying suspicious logins, detecting fraudulent signups and stopping scrapers and crawlers. Plans are billed monthly, and a free 14 day trial is offered.
follow.net
Follow.net is a web tool for finding, checking, or analyzing online information related to domains, networks, and digital services.
fullhunt.io
FullHunt is an internet intelligence infrastructure service that supplies internet asset, service, vulnerability and exploit data through REST APIs, data feeds and an MCP server. It also offers an enterprise platform for external exposure monitoring and a multi-tenant workspace for MSSPs. Pricing is listed for API, Enterprise and OEM access.
infosniper.net
InfoSniper is a free IP address lookup service that locates an IP on an interactive map with city, region, country, ISP, ASN, timezone and coordinates, supporting IPv4 and IPv6. It also offers XML and JSON REST APIs requiring an API key for IP geolocation data.
intodns.ai
IntoDNS.AI is a DNS and mail server checker that reports on SPF, DKIM, DMARC, DNSSEC, MTA-STS, BIMI, FCrDNS and blacklists. It also offers a free public REST API for DNS and email security scans, with JSON and Markdown reports. The service states it is not affiliated with intodns.com.
db-ip.com
DB-IP provides an IP geolocation API and database covering IPv4 and IPv6 address spaces, with data on locations and network intelligence. It lists uses including location-aware content, traffic surveys and risk analysis. A free download is offered.
ip.thc.org
Unlimited Reverse DNS, Subdomain and Reverse CNAME lookups, also provides JSON APIs.
ip2geo.dev
IP geolocation API providing city, country, timezone, ASN, and currency data from IP addresses.
ipfingerprints.com
A web service that displays the visitor's public IP address. It states that the address is assigned by the Internet Service Provider and can indicate general geographic location, and it suggests uses such as checking the current address, verifying a network connection and sharing the address with support teams for troubleshooting. It notes that only the IP is shown.
ipok.io
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
ismalicious.com
isMalicious checks IPs, domains, URLs, emails, phones and crypto wallets against indexed threat indicators. It returns verdicts with contributing sources, categories and a risk score from 0 to 100 in a JSON response. Data is available through a REST API, STIX/TAXII feeds and an MCP integration for AI assistants. A free plan allows 50 lookups per month.
isp.tools
Is a free platform offering network diagnostic tools (ping, traceroute, MTR, DNS, WHOIS, HTTP, etc.) tailored for ISPs and infrastructure professional
majestic.com
Majestic is a backlink analysis toolset for SEO, established in 2004. It maps the web to provide Link Intelligence data, including metrics such as Trust Flow, Citation Flow and Topical Trust Flow. Its tools include Site Explorer, Summary, Backlink History and Clique Hunter, along with an API and browser plugins.
maxmind.com
MaxMind is a web tool for finding, checking, or analyzing online information related to domains, networks, and digital services.
metadefender.opswat.com
Security lookup platform for scanning files, hashes, URLs, IPs, and domains against threat data.
openlinkprofiler.org
OpenLinkProfiler is a web tool for finding, checking, or analyzing online information related to domains, networks, and digital services.
pageglimpse.com
PageGlimpse is a web tool for finding, checking, or analyzing online information related to domains, networks, and digital services.
Compare listed projects
Details from each project's website. Open a listing for its full overview.
CrawlGraph
Features
- It does not run a live daily crawler Source: crawlgraph.com
digga
Features
- DNS records, RDAP, WHOIS, subdomains, IPs Source: digga.dev
DNSViz
Features
- visualizing the status of a DNS zone Source: dnsviz.net
Fullhunt
Pricing details
- Builder $149/month, Scale $1,499/month Source: fullhunt.io