RB2B

RB2B Identification API

Credit-metered Identification endpoints that convert anonymous web signals (IP addresses) into business identifiers — POST /ip_to_company, POST /ip_to_hem (hashed email, ranked by confidence) and POST /ip_to_maid (mobile ad ID). Hosted on api.rb2b.com and accessed through the RB2B API Partner Program with its own standalone account, credit balance and Api-Key header. Person-level resolution is US-only; company-level resolution is global.

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Documentation

📖
Documentation
https://support.rb2b.com/en/

Other Resources

🔗
Portal
https://ui.api.rb2b.com
🔗
SignUp
https://ui.api.rb2b.com/signup
🔗
MCPServer
https://www.npmjs.com/package/@rb2b/rb2b-apis-mcp
🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/rb2b/refs/heads/main/apis.yml

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API entry from apis.yml

apis.yml Raw ↑ 
aid: rb2b:rb2b-identification-api
name: RB2B Identification API
tags:
- Identity Resolution
- Identification
- IP Lookup
- Hashed Email
- Mobile Ad ID
- B2B Data
humanURL: https://ui.api.rb2b.com
baseURL: https://api.rb2b.com/api/v1
description: Credit-metered Identification endpoints that convert anonymous web signals (IP addresses)
  into business identifiers — POST /ip_to_company, POST /ip_to_hem (hashed email, ranked by confidence)
  and POST /ip_to_maid (mobile ad ID). Hosted on api.rb2b.com and accessed through the RB2B API Partner
  Program with its own standalone account, credit balance and Api-Key header. Person-level resolution
  is US-only; company-level resolution is global.
properties:
- url: https://ui.api.rb2b.com
  type: Portal
- url: https://support.rb2b.com/en/
  type: Documentation
- url: https://ui.api.rb2b.com/signup
  type: SignUp
- url: https://www.npmjs.com/package/@rb2b/rb2b-apis-mcp
  type: MCPServer
x-evidence:
  verified: '2026-08-12'
  method: live probe
  checks:
  - GET https://api.rb2b.com/api/v1/credits → 401 {"error":"missing_api_key"}
  - POST https://api.rb2b.com/api/v1/ip_to_company → 401 {"error":"missing_api_key"}
  contract_source: Endpoint paths and request bodies read from the provider's own published MCP server,
    @rb2b/rb2b-apis-mcp 1.1.7 (dist/api.js). No OpenAPI is published — /openapi.json, /openapi.yaml, /swagger.json,
    /v1/openapi.json, /api-docs, /docs and /redoc all 404 on api.rb2b.com.