# Bulk check WhatsApp numbers from a CSV column

**Use case:** 

Paste a whole spreadsheet column of phone numbers and get one clean record per number. Duplicates are merged automatically, so you never pay twice.

## Input

```json
{
  "phoneNumbers": [
    "+14155552671",
    "+442071838750",
    "+5511991234567",
    "+919876543210"
  ],
  "numbersText": "+14155552671\n+14155552672\n+442071838750\n+5511991234567\n+919876543210\n+14155552671",
  "defaultCountry": "US",
  "whatsappConcurrency": 10,
  "whatsappTimeout": 15,
  "exportFormat": "csv"
}
```

## Output

```json
{
  "input": {
    "label": "Input",
    "format": "text"
  },
  "whatsapp": {
    "label": "On WhatsApp",
    "format": "boolean"
  },
  "whatsappStatus": {
    "label": "Check result",
    "format": "text"
  },
  "valid": {
    "label": "Valid phone number",
    "format": "boolean"
  },
  "e164": {
    "label": "E.164",
    "format": "text"
  },
  "country": {
    "label": "Country",
    "format": "text"
  },
  "carrier": {
    "label": "Carrier",
    "format": "text"
  },
  "lineType": {
    "label": "Line type",
    "format": "text"
  },
  "whatsappCapable": {
    "label": "WhatsApp-capable",
    "format": "boolean"
  }
}
```

## About this Actor

This example demonstrates how to use [Fast WhatsApp Number Validator | $0.8/1K | Bulk Phone Cleanup](https://apify.com/apivault_labs/whatsapp-number-validator) with a specific input configuration. Visit the [Actor detail page](https://apify.com/apivault_labs/whatsapp-number-validator) to learn more, explore other use cases, and run it yourself.


## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.
This Task's input is already configured above — use it as-is rather than inventing a new one.

- **AI agents and MCP clients** — the [Apify MCP server](https://docs.apify.com/integrations/mcp.md) at `https://mcp.apify.com` (remote, streamable HTTP, OAuth on first use).
- **Agentic workflows and local Actor development** — [Agent Skills](https://apify.com/.well-known/agent-skills/index.json) with the [Apify CLI](https://docs.apify.com/cli/docs.md): `npm install -g apify-cli`, then `apify login`.
- **JavaScript/TypeScript projects** — the official [JS/TS client](https://docs.apify.com/api/client/js/docs.md): `npm install apify-client`.
- **Python projects** — the official [Python client](https://docs.apify.com/api/client/python/docs.md): `pip install apify-client`.
- **Any other language** — the [REST API](https://docs.apify.com/api/v2.md).

For full API examples (JavaScript, Python, CLI, MCP, OpenAPI), see this Task's Actor page: https://apify.com/apivault_labs/whatsapp-number-validator.md

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).