The Best isMalicious Alternatives in 2026

Validin provides a community platform for threat intelligence teams to research and share security information.

URLVoid checks a website's online reputation using multiple reputation and blocklist services to identify potential risks.

openSquat detects look-alike domains that resemble an organization’s legitimate domains, helping identify possible impersonation.

DNSTwist detects lookalike domains used in homograph phishing, typosquatting, and brand impersonation.

DNSai provides DNS lookups and analysis tools for records, WHOIS, blacklists, email authentication, and domains.

DomainRecon looks up DNS records, WHOIS details, SSL certificates, and IP addresses for a domain.

Web Check analyzes a website’s infrastructure and security signals through an OSINT and site diagnostics tool.

IsLegitSite checks whether a website may be a scam and reports its reputation through the Site Trustworthiness API.

IntoDNS.AI checks DNS and mail server settings including SPF, DKIM, and DMARC, combining results in one report.

TracerouteVisualizer maps network traceroute paths and displays the route between a device and a destination.

Passive subdomain reconnaissance for authorized testing is available through openSquat, a framework written in Rust.

Robtex searches network infrastructure records such as AS numbers, autonomous system macros, Bitcoin addresses, and other technical data.

Research a domain’s DNS records, RDAP, WHOIS, subdomains, IP addresses, and email security in one report.

ICANN Lookup searches registration data for domain names and related internet number resources.

Webscout provides intelligence about IP addresses to support network visibility and threat analysis.

DB-IP provides IP geolocation data through an API and database, mapping network addresses to location information.

ip2geo.dev provides an IP geolocation API for converting IPv4 and IPv6 addresses into location data.

Analyze backlinks using Common Crawl data, with limited free checks and paid access to expanded exports and analysis.

Check a website for data-protection measures with Webbkoll, a privacy analysis tool run by the 5th of July Foundation.

Domain Dossier investigates domains and IP addresses through lookups for ownership, DNS, and network details.

ViewDNS.info is a web-based collection of DNS, domain, and IP lookup tools, including reverse IP, WHOIS, DNS records, subdomain discovery, port scanning, and traceroute. It also offers an API for domain and IP data.

Azure Tenant Resolution by PingCastle maps domain information to Azure tenant data using an online lookup.

packet.guru checks browser-exposed IP and location data, privacy indicators, DNS and WebRTC leaks, plus network tools.