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WhoisXML API Alternatives

Looking for an alternative to WhoisXML API? Here are 4 other whois api options to consider:

WhoisXML API is an enterprise-grade internet intelligence platform offering one of the most comprehensive collections of domain, IP, DNS, and threat data available. It serves Fortune 1000 companies, managed security service providers, law enforcement agencies, and security operations centers that need deep visibility into the internet's infrastructure for threat detection, fraud prevention, brand protection, and digital forensics.

The platform spans over 30 APIs and data feeds covering Whois lookups, reverse Whois, DNS history, IP geolocation, subdomain discovery, email verification, SSL certificates, typosquatting detection, and predictive threat intelligence. With more than 25.5 billion historic Whois records, 116 billion DNS records, and coverage across 7,596 TLDs, WhoisXML API integrates with SIEM, SOAR, and threat intelligence platforms and is also accessible via an MCP server and AI-assisted research tools.