Sinch Number Lookup API

Overview

Queries phone numbers for carrier, line type, porting, SIM swap, VoIP detection, and reassigned number detection. Used for fraud prevention, routing, and data enrichment. One number per request — no batch endpoint.

Agent Instructions

Before generating code, gather from the user (skip any item already specified in the prompt or context):

1. Approach — SDK or direct API calls (curl/fetch/requests)?
2. Language — for SDK: Node.js or Python (partial). For direct API: any language, or curl. Java and .NET must use direct HTTP — there is no SDK wrapper.

When the user chooses SDK, refer to the sinch-sdks skill for installation and client initialization, then to the API Reference linked in Links.

When the user chooses direct API calls, refer to the API Reference linked in Links for request/response schemas.

Security: See the Security section below for url fetching policy and credential handling.