WDC MCP · Model Context Protocol
WhoisDataCenter MCP Server
Connect AI to WHOIS, Domain, Company & Internet Intelligence
Give ChatGPT, Claude, Cursor, Gemini, VS Code, and other AI agents direct access to WhoisDataCenter intelligence — WHOIS records, historical domain data, companies, emails, phones, IPs, DNS, SSL certificates, subdomains, technologies, cybersecurity signals, and more, all from one connection.
One MCP. Billions of records. One simple AI conversation.
Other50+ more registries
WDC MCPLead data as MCP toolsClaudeAI Agent
Meta Ads
Google Ads
Slack
Salesforce
Email Campaign
WhatsApp Campaign
HubSpot
DatabaseWritten back for every lead
Elastic
MongoDB
PostgreSQL
MySQL
Cassandra
Ask, don’t search
Ask questions. Get real data.
Instead of searching different databases and APIs, simply ask your AI agent. It selects the right WhoisDataCenter tools, searches the data, and gives you one useful answer.
“Give me everything you know about example.com.”
“Who owns this domain?”
“Show me the WHOIS history.”
“What company operates this website?”
“Find business emails for this company.”
“Find people connected with this company.”
“Find all domains connected with this email.”
“Show me every domain using this IP.”
“Find subdomains and SSL certificates.”
“Check if this domain has security risks.”
What it looks like
See it in action
A plain-English question, the tools the agent reaches for on its own, and one combined answer.
Claude
Who owns example.com, and is it safe to link to?
get_domain_reportget_domain_score
example.com is registered via a private registrar since 2009, currently pointing to nginx on Cloudflare. Trust score: 92/100 — no blacklist or phishing signals found.
Cursor
Find business emails for the company behind acme-labs.io.
resolve_queryget_domain_emails
Found 3 addresses on file for Acme Labs: [email protected], [email protected], and one registrant contact from WHOIS history.
ChatGPT
Investigate suspicious-example.net — full security report.
get_domain_scoreget_scam_domainsget_phishing_alertsget_lookalike_domains
Risk score 24/100 — flagged on 2 phishing-alert lists, and 6 lookalike domains registered in the last 90 days targeting the same brand. Recommend blocking.
What is WhoisDataCenter MCP?
WhoisDataCenter MCP is a Model Context Protocol server that connects AI applications directly with WhoisDataCenter data. It gives AI agents structured access to domain, WHOIS, company, contact, network, DNS, technology, and cybersecurity intelligence.
Instead of building many API integrations, you connect one MCP server — your AI agent then searches whichever dataset it needs, automatically.
Beyond registration lookups
More than a WHOIS MCP
Traditional WHOIS tells you about a domain registration. WhoisDataCenter MCP goes much further — a single domain can be connected with:
WHOIS recordsHistorical WHOISRegistrantsCompaniesPeopleBusiness emailsPhone numbersAddressesSocial profilesIP addressesASNHostingDNS recordsNameserversMX serversTXT recordsSSL certificatesSubdomainsTechnologiesCMSWeb serversDomain categoriesCountry signalsRelated domainsBlacklist signalsCybersecurity data
Your AI agent can connect these signals to build a much bigger picture.
Every dataset, one connection
What your AI agent can research
WHOIS Intelligence
Access current and historical WHOIS information.
Current WHOISLive WHOISParsed WHOISRaw WHOISHistorical WHOISWHOIS timelineDomain ownershipRegistrantRegistrarRegistration dateExpiration dateUpdated dateDomain ageDomain statusPrivacy detectionContact informationOwnership changesRegistrar changesEmail historyPhone historyCompany historyNameserver historyCountry history
“Show me how the ownership of example.com changed over time.”
Reverse WHOIS
Start with information about a person or company and discover connected domains.
EmailPhonePerson nameCompanyOrganizationAddressKeywordNameserverDNS information
“Find domains connected with [email protected].”
“Find domains registered to Example Technologies Ltd.”
Reverse searches can help discover relationships that are difficult to find with a normal domain lookup.
Company Intelligence
Turn a domain into company information.
Company nameWebsiteBusiness descriptionIndustryBusiness categoryCountryLocationCompany sizeContact informationBusiness emailsPhone numbersPeopleSocial profilesRelated websitesTechnologiesInternet infrastructure
“Research the company behind example.com.”
Email Intelligence
Search available email intelligence connected with domains, people, and companies.
Domain → EmailsCompany → EmailsPerson → EmailEmail → DomainEmail → CompanyEmail → Related domains
“Find available business emails for this company.”
The AI can combine email information with company and domain intelligence to provide better context.
People Intelligence
Discover available people connected with companies and websites.
NameJob titleCompanyBusiness emailPhoneLinkedIn or social profileDomainLocationOther available business information
“Find people working in cybersecurity at this company.”
Phone Intelligence
Search phone information connected with domains and businesses.
Domain → PhoneCompany → PhonePhone → DomainsPhone → CompanyHistorical WHOIS phone numbers
“What domains have been connected with this phone number?”
DNS Intelligence
Give your AI access to DNS infrastructure.
A recordsAAAA recordsNS recordsMX recordsTXT recordsCNAME recordsNameserversMail serversDNS relationships
“Show me the DNS infrastructure behind example.com.”
IP Intelligence
Investigate IPv4 and IPv6 infrastructure.
IP addressReverse IPDomains on an IPASNNetworkHosting providerCountryRelated infrastructureConnected websites
“Find domains hosted on the same IP as example.com.”
SSL Intelligence
Research SSL certificates and certificate relationships.
SSL issuerSSL subjectValid fromExpirationCertificate statusSubject countryCertificate domainsRelated domainsCertificate relationships
“Find other domains connected with this SSL certificate.”
Subdomain Intelligence
Discover known subdomains.
“Find all known subdomains for example.com.”
Your AI can combine subdomain information with IP, SSL, DNS, and technology data for deeper infrastructure research.
Technology Intelligence
Understand what technologies a website uses.
CMSWeb serverHostingWebsite technologiesEmail providerDNS providerSSL infrastructureOther detected technologies
“Which companies use WordPress and Cloudflare?”
Newly Registered Domains
Access newly registered domain intelligence through your AI agent.
DateTLDKeywordCountryRegistrarCompanyAvailable WHOIS informationOther domain signals
“Find newly registered .com domains containing the word "security".”
The AI can then enrich these domains with other available WhoisDataCenter data.
Cybersecurity & Threat Intelligence
Use WhoisDataCenter MCP for domain and infrastructure investigations.
Suspicious domainsDomain ownershipHistorical ownershipNewly registered domainsBlacklisted domainsRelated domainsIP infrastructureASNDNSNameserversMX serversSSL certificatesSubdomainsTechnologiesTyposquatting signalsDomain changesInfrastructure relationships
“Investigate suspicious-example.com and give me a security report.”
The AI can automatically use several tools and combine the results.
Sales & Company Research
Research businesses before contacting them.
CompanyIndustryWebsiteBusiness descriptionEmployees or peopleEmailsPhonesTechnologiesHostingDomain ageRelated domainsSocial profiles
“Research example.com as a possible customer.”
This can help sales and research teams understand a company before contacting it.
Domain enrichment
A domain can be the starting point for a much larger investigation. Ask “Enrich example.com” and the AI searches multiple sources, ending in one combined domain intelligence profile.
Domain
WHOIS
Company
People
Emails & Phones
IP & ASN
DNS & MX
SSL
Subdomains
Technologies
Security Signals
Related Domains
Company enrichment
You can also start with a company. Ask for “a complete intelligence profile for Example Inc.” and the AI works outward from there — useful for far more than domain research.
Company information
Websites
Domains
People
Business emails
Phones
Social profiles
IP infrastructure
Technologies
Cybersecurity signals
One question can trigger many searches
Ask “Investigate example.com” and your AI agent could, in order:
- 1Look up current WHOIS.
- 2Check historical WHOIS.
- 3Find ownership changes.
- 4Identify the company.
- 5Find available people.
- 6Find available business emails.
- 7Find phone numbers.
- 8Check IP and ASN.
- 9Find DNS records.
- 10Find nameservers and MX servers.
- 11Check SSL certificates.
- 12Discover subdomains.
- 13Detect website technologies.
- 14Check blacklist and risk signals.
- 15Find related domains.
- 16Create one combined report.
You do not need to call every tool yourself — the AI agent decides which ones it needs.
Search from any signal
Start your investigation with almost any piece of information — useful for relationship discovery and internet intelligence.
DomainCompanyDomainWHOISDomainEmailDomainPhoneDomainIPDomainDNSDomainSSLDomainSubdomainsCompanyDomainsCompanyPeopleCompanyEmailsEmailDomainsPhoneDomainsIPDomainsNameserverDomainsSSLDomains
Built for AI agents
Connect WhoisDataCenter MCP with any MCP-compatible application.
ChatGPTClaudeClaude DesktopClaude CodeCursorGeminiVS CodeInternal AI systemsAI research agentsCybersecurity agentsSales agentsCustom applications
Model Context Protocol · Connector Guide
WhoisDataCenter MCP
in Claude
A start-to-finish walkthrough for connecting the WhoisDataCenter MCP server to Claude — so you can ask, in plain English, for WHOIS records, company and contact intelligence, DNS/IP/SSL infrastructure, and cybersecurity signals, without leaving the chat.
Server:https://mcp.whoisdatacenter.com/
Transport:Remote MCP · Streamable HTTP
Auth:WhoisDataCenter account or API key
Works with:Claude.ai · Claude Desktop · Claude Code
Setup time:~1 minute
Status:ACTIVE
01
Before you start
Three things, and the whole connection takes under a minute.
- A WhoisDataCenter account with an active plan, or a WhoisDataCenter API key — either one is accepted when Claude asks you to authenticate.
- A Claude account (Free, Pro, Max, Team, or Enterprise) at claude.ai, in Claude Desktop, or Claude Code.
- On a Team or Enterprise workspace, an admin may need to allow Custom connectors first, under Settings → Capabilities, before it shows up for the rest of the workspace.
02
Add WhoisDataCenter as a custom connector
WhoisDataCenter isn't (yet) in Claude's built-in directory, so you add it the same way you'd add any remote MCP server — by URL.
Open Settings in Claude, then look under Customize in the left sidebar for Connectors. (If you land on the older Settings → Connectors page, it now just points you there.)
ConnectorsConnectors have moved to Customize. Head there to browse, connect, and manage them.
Fig. 1 — the old Settings → Connectors page now redirects into Customize. On the Connectors page, click Add in the top-right corner.
ConnectorsAddYour connectorsDiscoverConnector Type Authorization Status Google Drive Web Individual ✓ Slack Web Individual ✓ Notion Web — Connect Fig. 2 — your existing connectors list (yours will show whatever you've already connected). In the Add custom connector dialog, fill in two fields:
- Name — anything you like, e.g. WhoisDataCenter. It's just the label shown in your connector list.
- MCP server URL — paste exactly: https://mcp.whoisdatacenter.com/
Add custom connectorConnect Claude to your data and tools. Learn more about connectors or get started with pre-built ones.
WhoisDataCenterShown in the connectors list.https://mcp.whoisdatacenter.com/The HTTPS address where the server accepts MCP requests.Only use connectors from developers you trust. Anthropic doesn't control which tools developers make available and can't verify they'll work as intended or won't change.CancelContinueFig. 3 — the dialog filled in with WhoisDataCenter's name and server URL. Click Continue. Claude reaches out to mcp.whoisdatacenter.com and moves you to authentication — the next section.
03
Authenticate with WhoisDataCenter
Many lookups work right away with no sign-in at all — WhoisDataCenter serves anonymous requests up to a free usage limit. If Claude shows a sign-in screen after step 2 (or once you want a higher limit or your paid plan), it accepts your regular WhoisDataCenter account (email + password, or Google).
!
There's no self-service "API key" page in your WhoisDataCenter account — a backup API key is only ever issued automatically by email after a paid checkout, for the rare case where you need to connect from a different network than the one you originally signed up from. You won't normally need one. If you do have one, enter it only inside the authentication screen Claude opens for this connector — never in a chat message or shared doc.
Once sign-in succeeds (if it was shown), the connector's row on the Connectors page shows a checkmark under Status, and it's ready either way.
04
Turn it on for a conversation
Connecting an account makes the connector available; you still flip it on per chat (or set it to stay on by default) from the tools/connector picker in the message composer — usually a small + or tools control next to where you type. Toggle WhoisDataCenter on there.
From that point, you don't call any tool by name — just ask a normal question. Claude decides on its own which of WhoisDataCenter's WHOIS, company, DNS, IP, SSL, or cybersecurity tools to run, sometimes chaining several together for one answer.
05
What to ask it
Ask the way you'd ask a colleague — a domain, a company, an email, a phone number, or an IP are all valid starting points.
ownership
Who owns example.com, and how has that changed over time?Give me everything you know about example.com
reverse lookup
Find every domain connected to [email protected]What domains are registered to Example Technologies Ltd?
company & people
Research the company behind example.com before I contact themFind people working in security at this company
infrastructure
What else is hosted on this same IP address?Show me the subdomains and SSL certificates for this domain
security
Investigate this domain and give me a security reportFind newly registered .com domains containing "security"
06
Datasets it covers
One connector, sourced from 50+ registries (ICANN, AFNIC, Nominet, DNS Belgium, and others). Claude reaches into whichever of these it needs for your question.
WHOIS & history
Current + historical WHOIS, ownership and registrar changes, domain age and status.
Reverse WHOIS
Start from an email, phone, name, or company and find connected domains.
Company
Industry, size, location, related sites and infrastructure behind a domain.
Email & phone
Business emails and numbers linked to a domain, person, or company.
People
Names, titles, and social profiles connected to a company or site.
DNS & IP
A/AAAA/MX/TXT records, nameservers, ASN, hosting, reverse-IP neighbors.
SSL & subdomains
Certificate issuer/subject history and known subdomains for a domain.
Technology
CMS, web server, and other stack signals detected on a site.
Cybersecurity
Newly registered domains, blacklist and typosquatting signals.
07
Claude Desktop & Claude Code
Same server, same credentials — only the settings screen changes.
Claude Desktop: Settings → Connectors → Add custom connector, same two fields as above.
Claude Code / other MCP clients: drop this into your MCP config file:
{
"mcpServers": {
"whoisdatacenter": {
"url": "https://mcp.whoisdatacenter.com/"
}
}
}08
Tips & troubleshooting
- No response / tool errors: reopen Customize → Connectors and confirm WhoisDataCenter still shows a checkmark under Status — re-authenticate if it doesn't.
- Claude isn't using it: double-check it's toggled on for the current chat in the tools picker (step 4) — a connector you've added but left off won't be called.
- Usage & limits: lookups draw on your WhoisDataCenter plan's own quota, separate from your Claude usage — see their pricing page for current limits.
- Removing it: from Customize → Connectors, open WhoisDataCenter's row and choose to disconnect or remove it — this revokes Claude's access without touching your WhoisDataCenter account itself.
Full API reference
Every tool, in detail
The capability cards above group tools by use case. This is the literal tool surface the server exposes — every tool name and parameter, for wiring up a client or debugging a call.
resolve_queryResolve a free-text value — an email address, phone number, IP address, or company name — down to the domain it's associated with.
kindenumrequireddomain · email · phone · ip · companyvaluestringrequiredthe free-text value to resolveSetup takes under a minute
Connect to WhoisDataCenter MCP
MCP server
https://mcp.whoisdatacenter.com/Example configuration
{
"mcpServers": {
"whoisdatacenter": {
"url": "https://mcp.whoisdatacenter.com/"
}
}
}Authenticate using your WhoisDataCenter credentials or API key. Your API key should always be kept private.
One MCP for internet intelligence
WHOIS is only the beginning.
WhoisDataCenter MCP brings together domain registration, historical WHOIS, company, contact, DNS, IP, SSL, subdomain, technology, and cybersecurity intelligence. Connect once. Ask questions in plain English. Let your AI agent do the research.
Start building with WhoisDataCenter MCP
https://mcp.whoisdatacenter.com/