NumRadar

NumRadar

Know which phone numbers are on WhatsApp before you send

NumRadar checks whether phone numbers are registered on WhatsApp, helping teams choose the right channel before a campaign, reminder or customer workflow. Bulk validate your phone-number data in a few clicks, call the real-time REST API, let an AI agent handle checks through MCP, or validate numbers you find online with the Chrome extension. Plans start at $9 USD/month for 5,000 validations; $29 for 25,000, $99 for 100,000 and $249 for 300,000. All plans include every interface. No WhatsApp account connection is required.

Technology

Features

Bulk phone-number validation with clear, downloadable results.

Real-time REST API for your customer workflows.

MCP server for natural-language checks through AI agents.

Chrome extension for checking phone numbers online.

All features included from $9 USD/month.

Use Cases

Clean customer and lead lists before outreach.

Check WhatsApp registration before your system selects a messaging channel.

Validate a phone number from a webpage or an AI-agent conversation.

Registration checks do not send messages, guarantee delivery or establish permission to contact someone.

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