Getting started with Number Lookup API

Step 1

Declare intended use case

Step 2

Create an application

Step 3

Select a language

This guide shows how to get started using the Number Lookup API.

Before you can start looking up numbers, you need to complete some basic configuration steps:

Account required!

Using the Number Lookup API requires signing up for a free account on the Sinch Customer Dashboard. If you haven't already done so, sign up now!

1. Declare intended use case

Go to Access Requirements in the Number Lookup menu and click SUBMIT USE CASES for Line Type access to select your use cases. This is required before using the Number Lookup API to ensure compliance with legal and regulatory requirements and align with the rights of use for the services.

Important!

If you do not declare your intended use cases, you will receive an error: 403 error: Line type use cases not specified.

2. Create an application

To use Number Lookup API, you must create a Number Lookup app in the Sinch Customer Dashboard. Once you have an app, take note of the application key and application secret, as you will use those to authenticate calls to the API.

3. Select a language

You're ready to get started looking up numbers with Number Lookup API. These guides will walk you through setting up a simple application in the following languages:

REST API guides

You can access the Number Lookup API directly through HTTP requests. Select your preferred language and learn how to set up a simple application: