NumRadar
Check which phone numbers are registered on WhatsApp at scale
- #17 in week 46 · live
- Utilities
- APIs and backend
- Automation
- Subscription, from €9/month
- Launched 2 Nov 2026
Picture 1 of 1: NumRadar social image
About
NumRadar is a WhatsApp number verification tool for teams that need to validate customer and lead lists before campaigns, reminders, or outreach. Upload a CSV file of up to 5,000 numbers on the Starter plan, use the REST API for single checks, connect an AI agent via MCP, or install the Chrome extension to check numbers on a page. The service returns whether each number is registered on WhatsApp, not registered, unknown, or invalid.
You upload your contact list once and the tool checks your whole file without needing your own WhatsApp account or Business account connected. Duplicate numbers are removed before billing. Results show which customers can receive WhatsApp messages and which need SMS or email instead, so you can choose the right channel before sending.
NumRadar runs on the web, via API, through AI agents like Claude or Cursor, or through a browser extension. Invalid numbers and failed checks cost nothing. Processing speed varies by plan: Starter handles 4 numbers per minute, Growth handles 10, and Business handles 20.
You pay only for successful validations. Invalid numbers and checks that could not complete do not use your monthly allowance. Duplicate numbers are removed before billing. The service never connects to your WhatsApp account, keeping your own number and Business account separate from the verification process.
- Problem
- Teams often save phone numbers to their personal WhatsApp to check if contacts are registered, wasting time and risking account issues. Sending campaigns to numbers not on WhatsApp wastes resources and gets no replies.
- Solution
- Upload your contact list once to check all numbers at scale. Get results showing which are registered on WhatsApp before you send campaigns, reminders, or outreach. Use the result to choose WhatsApp, SMS, or email for each contact.
Updated 6d ago
Facts
- Launch type
- Free launch, badge required
- Domain
- numradar.app, verified 2 Nov 2026
- Launch week
- Week 46 · Nov 9–15
- Platforms
- Web, API, Browser extension
- Pricing
- Subscription, from €9/monthFrom the maker's site, checked 2 Nov 2026
- Counted in
- New software tools statistics
- Built for
- MarketersSmall businessesSales teams
- Maker
- helloSince Oct 2026 · 2 products
Updates
Launched on What’s New Today
Free launch for week 46. Domain verified on 2 Nov 2026.
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