# RB2B Identification API

**Canonical:** https://apis.io/apis/rb2b/rb2b-identification-api/  
**Provider:** RB2B — https://apis.io/providers/rb2b/  
**Base URL:** https://api.rb2b.com/api/v1  
**Documentation:** https://ui.api.rb2b.com

RB2B Identification API is one of 4 APIs that [RB2B](https://apis.io/providers/rb2b/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Identity Resolution, Identification, IP Lookup, Hashed Email, and Mobile Ad ID. The published artifact set on APIs.io includes API documentation.

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.

## Machine-readable artifacts (5)

- **Portal** — https://ui.api.rb2b.com
- **Documentation** — https://support.rb2b.com/en/
- **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

## Other RB2B APIs (3)

- [RB2B Enrichment API](https://apis.io/apis/rb2b/rb2b-enrichment-api/)
- [RB2B OEM Partner API](https://apis.io/apis/rb2b/rb2b-oem-partner-api/)
- [RB2B Pixel and Destination Webhooks](https://apis.io/apis/rb2b/rb2b-pixel-webhooks/)

## Tags

Identity Resolution, Identification, IP Lookup, Hashed Email, Mobile Ad ID, B2B Data

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/rb2b/rb2b-identification-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/rb2b/.