WhoisXML API
Domain, IP, and threat intelligence for investigations
- Category
- Security
- Primary Subcategory
- Email & Domain Security Posture
View in the Claude registryIntegration details
Description
The WhoisXML API MCP server brings WhoisXML's full data catalog into Claude. Investigate suspicious domains, map subdomain footprints, look up IP geolocation, query historical WHOIS records, and check threat intelligence — all from a chat session. Tool surface: WHOIS, Domain Availability, Domain Reputation, Categorization, IP Geolocation, IP Netblocks, Reverse IP, DNS Lookup, Subdomains, WHOIS History, Reverse WHOIS, threat intelligence, and more — 32 read-only tools backed by WhoisXML API. Built by WhoisXML API — domain, IP, and DNS intelligence provider since 2010. Connect with your WhoisXML API key via OAuth; usage is billed against your own WhoisXML account.
- Integration type
- Connector
- Verification status
Community connector- Platform
- Claude
- Primary Subcategory
- Email & Domain Security Posture
- Secondary Subcategories
- None listed
- Brand
- WhoisXML API
- Access
- Account required
- First tracked
- 2026-08-14
- Tool count
- 32
- Geography
- US
The Primary Subcategory used for this profile’s headline score.
Other Subcategories where the Integration is listed.
Claude Discoverability Score
Claude Connector discovery is coming soon
Community Connectors only appear in Claude’s registry.Once verified, organic discovery begins and we can calculate your score.Read more about Community Connector verification.
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What discovery looks like
Claude can surface verified Connectors when they match a user’s Prompt.
How Claude Connector discovery works
Your Connector will compete to appear for users’ Prompts once Claude verifies it
Competing in Claude Email & Domain Security Posture
View Category32 tools agents can invoke
How do I improve a Community connector's discoverability?
The levers are the listing surface agents actually read: names, descriptions, keywords, tool metadata, and registry health. Which lever matters depends on where discovery breaks, which is what continuous measurement shows.
What are WhoisXML API alternatives on Claude?
As of 2026-09-11, WhoisXML API competes with DNS Inspector, Ocean, Robtex Network Intelligence in Claude Email & Domain Security Posture, ranked by public Discoverability Score.
Where is this profile measured?
This profile uses the geography attached to the latest public registry snapshot: US. Locale tags are intentionally omitted.