***

title: phoneNumber
slug: /reference/typescript/rest/lookup/phone-number
description: Phone Number Lookup namespace.
max-toc-depth: 3
---------------------

For a complete index of all SignalWire documentation pages, fetch https://signalwire.com/docs/llms.txt

Phone Number Lookup namespace.

<EndpointSchemaSnippet endpoint="GET /api/relay/rest/lookup/phone_number/{e164_number}" />

## **Response Example**

<EndpointResponseSnippet endpoint="GET /api/relay/rest/lookup/phone_number/{e164_number}" />

## **Example**

```typescript {4}
import { RestClient } from "@signalwire/sdk";

const client = new RestClient();
const result = await client.lookup.phoneNumber("+15551234567");
console.log(result);
```