> ## Documentation Index
> Fetch the complete documentation index at: https://docs.stackone.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Whois

> 20 actions available for Whois through StackOne. Use via Actions RPC, Toolset SDK, MCP, or A2A.

<div className="not-prose" style={{ display: 'flex', alignItems: 'center', gap: '12px', marginBottom: '24px' }}>
  <img src="https://stackone-logos.com/api/whois/filled/png" alt="Whois" className="connector-page-icon" style={{ width: '48px', height: '48px', borderRadius: '10px', padding: '2px' }} />

  <div>
    <div style={{ fontSize: '24px', fontWeight: '600' }}>Whois</div>
    <div className="connector-page-subtitle" style={{ fontSize: '14px' }}>20 actions · 1 auth method</div>

    <div style={{ display: 'flex', flexWrap: 'wrap', gap: '6px', marginTop: '8px' }}>
      <span className="connector-page-tag-preview" style={{ display: 'inline-block', padding: '2px 8px', borderRadius: '4px', fontSize: '11px', fontWeight: '500' }}>Preview</span>
      <span className="connector-page-category-tag" style={{ display: 'inline-block', padding: '2px 8px', borderRadius: '4px', fontSize: '11px', fontWeight: '500' }}>Account</span>
    </div>
  </div>
</div>

## Authentication

<Columns cols={2}>
  <Card title="API Key">
    Uses a single account API key shared across every WhoisXML product, passed as a query parameter (or in the request body...

    Guides: [Connector Profile](/connectors/whois/guides/connector-profile/api-key), [Link Account](/connectors/whois/guides/link-account/api-key)
  </Card>
</Columns>

<div className="connector-meta-library-section">
  <div className="connector-meta-library-title">Actions</div>

  <div className="connector-actions-controls not-prose" data-connector-actions-controls>
    <div className="connector-actions-controls__row">
      <input type="search" className="connector-actions-search" data-connector-actions-search placeholder="Search actions" aria-label="Search actions" />
    </div>
  </div>

  <div className="meta-library-count" data-connector-actions-count>20 actions</div>

  <div className="not-prose meta-library-table-container" data-connector-actions-table>
    <div className="connector-meta-library-grid" style={{ gridTemplateColumns: '200px 1fr' }}>
      <div className="connector-meta-library-row">
        <div className="meta-library-grid-header-cell">Action</div>
        <div className="meta-library-grid-header-cell">Description</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="whois_get_account_balance" data-action-label="Get Account Balance" data-action-scopes="" data-action-auth="API Key" data-action-auth-scopes="{&#x22;API Key&#x22;:[]}">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Get Account Balance</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="whois_get_account_balance" aria-label="Copy whois_get_account_balance"><code className="connector-page-code">whois\_get\_account\_balance</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Get the remaining API credits for each subscribed product.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="whois_lookup" data-action-label="WHOIS Lookup" data-action-scopes="" data-action-auth="API Key" data-action-auth-scopes="{&#x22;API Key&#x22;:[]}">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>WHOIS Lookup</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="whois_lookup" aria-label="Copy whois_lookup"><code className="connector-page-code">whois\_lookup</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Get the WHOIS record for a domain or IP.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="whois_history" data-action-label="WHOIS History" data-action-scopes="" data-action-auth="API Key" data-action-auth-scopes="{&#x22;API Key&#x22;:[]}">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>WHOIS History</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="whois_history" aria-label="Copy whois_history"><code className="connector-page-code">whois\_history</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Get the historical WHOIS records for a domain.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="whois_dns_lookup" data-action-label="DNS Lookup" data-action-scopes="" data-action-auth="API Key" data-action-auth-scopes="{&#x22;API Key&#x22;:[]}">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>DNS Lookup</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="whois_dns_lookup" aria-label="Copy whois_dns_lookup"><code className="connector-page-code">whois\_dns\_lookup</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Get DNS records for a domain.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="whois_check_domain_availability" data-action-label="Check Domain Availability" data-action-scopes="" data-action-auth="API Key" data-action-auth-scopes="{&#x22;API Key&#x22;:[]}">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Check Domain Availability</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="whois_check_domain_availability" aria-label="Copy whois_check_domain_availability"><code className="connector-page-code">whois\_check\_domain\_availability</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Check whether a domain is available for registration.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="whois_subdomains_lookup" data-action-label="Subdomains Lookup" data-action-scopes="" data-action-auth="API Key" data-action-auth-scopes="{&#x22;API Key&#x22;:[]}">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Subdomains Lookup</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="whois_subdomains_lookup" aria-label="Copy whois_subdomains_lookup"><code className="connector-page-code">whois\_subdomains\_lookup</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Discover subdomains for a domain.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="whois_domain_reputation" data-action-label="Domain Reputation" data-action-scopes="" data-action-auth="API Key" data-action-auth-scopes="{&#x22;API Key&#x22;:[]}">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Domain Reputation</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="whois_domain_reputation" aria-label="Copy whois_domain_reputation"><code className="connector-page-code">whois\_domain\_reputation</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Get the reputation score for a domain.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="whois_ssl_certificates" data-action-label="SSL Certificates Lookup" data-action-scopes="" data-action-auth="API Key" data-action-auth-scopes="{&#x22;API Key&#x22;:[]}">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>SSL Certificates Lookup</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="whois_ssl_certificates" aria-label="Copy whois_ssl_certificates"><code className="connector-page-code">whois\_ssl\_certificates</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Get the SSL/TLS certificate chain for a domain.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="whois_website_categorization" data-action-label="Website Categorization" data-action-scopes="" data-action-auth="API Key" data-action-auth-scopes="{&#x22;API Key&#x22;:[]}">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Website Categorization</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="whois_website_categorization" aria-label="Copy whois_website_categorization"><code className="connector-page-code">whois\_website\_categorization</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Get the content categories for a domain.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="whois_verify_email" data-action-label="Verify Email" data-action-scopes="" data-action-auth="API Key" data-action-auth-scopes="{&#x22;API Key&#x22;:[]}">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Verify Email</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="whois_verify_email" aria-label="Copy whois_verify_email"><code className="connector-page-code">whois\_verify\_email</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Verify an email address.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="whois_ip_geolocation" data-action-label="IP Geolocation" data-action-scopes="" data-action-auth="API Key" data-action-auth-scopes="{&#x22;API Key&#x22;:[]}">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>IP Geolocation</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="whois_ip_geolocation" aria-label="Copy whois_ip_geolocation"><code className="connector-page-code">whois\_ip\_geolocation</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Get geolocation and network data for an IP address.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="whois_ip_netblocks_lookup" data-action-label="IP Netblocks Lookup" data-action-scopes="" data-action-auth="API Key" data-action-auth-scopes="{&#x22;API Key&#x22;:[]}">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>IP Netblocks Lookup</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="whois_ip_netblocks_lookup" aria-label="Copy whois_ip_netblocks_lookup"><code className="connector-page-code">whois\_ip\_netblocks\_lookup</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Get the netblock (IP range) records that an IP, ASN, or organization belongs to.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="whois_reverse_whois_search" data-action-label="Reverse WHOIS Search" data-action-scopes="" data-action-auth="API Key" data-action-auth-scopes="{&#x22;API Key&#x22;:[]}">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Reverse WHOIS Search</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="whois_reverse_whois_search" aria-label="Copy whois_reverse_whois_search"><code className="connector-page-code">whois\_reverse\_whois\_search</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Find domains matching WHOIS record search terms.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="whois_reverse_ns_lookup" data-action-label="Reverse NS Lookup" data-action-scopes="" data-action-auth="API Key" data-action-auth-scopes="{&#x22;API Key&#x22;:[]}">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Reverse NS Lookup</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="whois_reverse_ns_lookup" aria-label="Copy whois_reverse_ns_lookup"><code className="connector-page-code">whois\_reverse\_ns\_lookup</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Find domains served by a name server.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="whois_reverse_mx_lookup" data-action-label="Reverse MX Lookup" data-action-scopes="" data-action-auth="API Key" data-action-auth-scopes="{&#x22;API Key&#x22;:[]}">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Reverse MX Lookup</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="whois_reverse_mx_lookup" aria-label="Copy whois_reverse_mx_lookup"><code className="connector-page-code">whois\_reverse\_mx\_lookup</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Find domains using a mail server.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="whois_reverse_ip_lookup" data-action-label="Reverse IP Lookup" data-action-scopes="" data-action-auth="API Key" data-action-auth-scopes="{&#x22;API Key&#x22;:[]}">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Reverse IP Lookup</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="whois_reverse_ip_lookup" aria-label="Copy whois_reverse_ip_lookup"><code className="connector-page-code">whois\_reverse\_ip\_lookup</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Find domains hosted on an IP address.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="whois_brand_alert" data-action-label="Brand Alert" data-action-scopes="" data-action-auth="API Key" data-action-auth-scopes="{&#x22;API Key&#x22;:[]}">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Brand Alert</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="whois_brand_alert" aria-label="Copy whois_brand_alert"><code className="connector-page-code">whois\_brand\_alert</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Find newly registered or dropped domains matching brand terms.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="whois_registrant_alert" data-action-label="Registrant Alert" data-action-scopes="" data-action-auth="API Key" data-action-auth-scopes="{&#x22;API Key&#x22;:[]}">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Registrant Alert</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="whois_registrant_alert" aria-label="Copy whois_registrant_alert"><code className="connector-page-code">whois\_registrant\_alert</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Find newly registered or dropped domains matching registrant terms.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="whois_capture_screenshot" data-action-label="Capture Website Screenshot" data-action-scopes="" data-action-auth="API Key" data-action-auth-scopes="{&#x22;API Key&#x22;:[]}">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Capture Website Screenshot</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="whois_capture_screenshot" aria-label="Copy whois_capture_screenshot"><code className="connector-page-code">whois\_capture\_screenshot</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Capture a screenshot of a web page.</div>
      </div>

      <div className="connector-meta-library-row" data-action-id="whois_threat_intelligence" data-action-label="Threat Intelligence Lookup" data-action-scopes="" data-action-auth="API Key" data-action-auth-scopes="{&#x22;API Key&#x22;:[]}">
        <div className="meta-library-grid-cell connector-meta-library-item-cell">
          <div style={{ fontWeight: '500' }}>Threat Intelligence Lookup</div>
          <div style={{ marginTop: '4px' }}><button type="button" className="connector-page-code-button" data-copy="whois_threat_intelligence" aria-label="Copy whois_threat_intelligence"><code className="connector-page-code">whois\_threat\_intelligence</code></button></div>
        </div>

        <div className="meta-library-grid-cell meta-library-grid-cell--description">Look up threat intelligence for an indicator of compromise.</div>
      </div>
    </div>
  </div>
</div>

## Getting Started

<Steps>
  <Step title="Create or Select a Project">
    Set up a new project or select an existing one. See [Organizations & Projects](/gateway/concepts/organizations-and-projects).
  </Step>

  <Step title="Configure the Connector">
    Enable the connector and set up a connector profile in your project. See [Managing Connectors](/connect/managing-connectors/overview).

    <Columns cols={2}>
      <Card title="Connector Profile" href="/connectors/whois/guides/connector-profile/api-key" icon="https://stackone-logos.com/api/whois/filled/png" horizontal>
        Whois - API Key
      </Card>
    </Columns>
  </Step>

  <Step title="Link an Account">
    Connect an account using [StackOne Hub](/embed/account-linking/overview) or [Auth Link](/embed/account-linking/auth-link).

    <Columns cols={2}>
      <Card title="Link Account" href="/connectors/whois/guides/link-account/api-key" icon="https://stackone-logos.com/api/whois/filled/png" horizontal>
        Whois - API Key
      </Card>
    </Columns>
  </Step>

  <Step title="Use Actions">
    Invoke actions using one of the methods below:

    * [MCP](/embed/call-actions/mcp) – Model Context Protocol for AI assistants
    * [A2A](/embed/call-actions/agent2agent) – Agent-to-Agent protocol
    * [Agent SDK](/embed/call-actions/agent-sdk) – TypeScript and Python SDKs for AI agents
    * [Actions RPC](/platform/api-reference/actions/make-an-rpc-call-to-an-action) – Direct API calls
    * [Playground](/embed/call-actions/troubleshooting/playground) – Test actions in the dashboard
  </Step>
</Steps>