Bulk WhatsApp Number Checker (WA Checker) by ToolsACE

Bulk WhatsApp number checker: see which phone numbers are on WhatsApp (WA). Safe pace, CSV/Excel export, free. We collect no data.

Bulk WhatsApp Number Checker (WA Checker) by ToolsACE tells you which phone numbers on a list are registered on WhatsApp, so you can verify and clean a contact list before you message it. Paste numbers or import a CSV, check them in bulk, and export only the ones you need. It runs in Chrome's side panel next to WhatsApp Web. HOW IT WORKS 1. Open web.whatsapp.com and log in as usual. 2. Click the extension icon to open the side panel. 3. Paste numbers or import a CSV / TXT file, choose a pace (and a country for local numbers), then press Check. 4. Watch each number come back YES or NO. 5. Choose All, YES, NO or Errors, then copy the result or download it as CSV or Excel. FEATURES Checking • Paste numbers, or import a CSV / TXT file (drag and drop works too) • Works with any country: pick yours once from a searchable Country list (or choose Auto-detect) for local numbers, and mix in numbers written with +country code. Numbers are never guessed: any that cannot be placed are reported, not looked up wrongly • Pace presets (Slow, Safe, Fast) to space out lookups • Pause and resume, and retry just the errors • Recent results are remembered (7 days for YES, 1 day for NO), so the same number is not looked up twice • A daily safety limit (200 lookups) helps protect your WhatsApp account Results and export • Every result shows its country, and exports include a Country column • Filter by All, YES, NO or Errors: the Copy / export selector decides which rows you copy or download • Copy the numbers, copy a table for Google Sheets / Excel, or download CSV and XLSX Everyday use • Light and dark theme, remembered between sessions • Report a problem in one tap: opens a WhatsApp chat with the developer • Completely free: no sign-up, no account Great for cleaning sales, support and marketing contact lists before you message them. PRIVACY Everything runs in your browser. Your numbers are not sent to us (we have no servers), and there is no analytics or tracking. Each lookup goes through your own WhatsApp Web session: WhatsApp Web itself sends the number to WhatsApp, exactly as if you searched for it in the app. IMPORTANT This is an unofficial tool and is not affiliated with, endorsed by or sponsored by WhatsApp or Meta. Checking many numbers in a short time may cause WhatsApp to restrict your account. Keep the Safe pace and the daily limit, and use the tool at your own risk. Made by toolsace.io