Bulk WhatsApp Number Checker & Validator
Import or paste a contact list, check registration status in your browser, filter the results, and export the numbers you need.
Phone number list
One number per lineHow to Check WhatsApp Numbers in Bulk
A simple way to check WhatsApp numbers online and reach the right customers.
Step 1: Install
Install the WAChecker Chrome extension and open WhatsApp Web.
Step 2: Check
Paste or import the numbers to be verified, then click "Start Checking".
Step 3: Export
Review the results and export the valid numbers with one click to target potential customers accurately.
Everything You Need for Bulk Checking
Filter, verify, and export large contact lists without leaving your browser.
Efficient Bulk Verification
Save hours of manual work. Instantly check WhatsApp numbers in bulk from Excel or pasted lists with high speed and stability.
Clear Result Filtering
Separate registered and not-found results with one click before deciding how to handle each contact.
Duplicate Detection
Automatically detect and mark duplicate numbers to avoid wasted checks and duplicate outreach.
Flexible Processing Controls
Use configurable intervals to verify numbers at a controlled pace that fits your workflow.
Your Data Stays Yours
Data Privacy & Security
Imported lists and task results are processed inside the browser extension — never uploaded to any server.
Local Storage & Sandbox
All data lives in the extension's local storage, isolated from cloud services by design.
Secure Result Handling
Check results are generated and stored only on your device, and exports stay under your control.
No API Approval Required
No WhatsApp Business API application needed — install the extension and start checking right away.
Filter and Export in One Place
Review every result, remove what you don't need, and keep only the numbers that matter — then export them to Excel for your next campaign.
Filter Valid Numbers
Filter your list by registered, not-found, and pending states with one click.
Remove Invalid Numbers
Mark and remove invalid or unregistered numbers to keep your list clean.
Export Results
Export the filtered valid numbers to Excel, ready for your campaigns.
Total Checked
12,480
Master Every Check in One Dashboard
Real-time Monitoring
Progress bar and per-number status update in real time — you always know where the check stands.
Check History
Every checking task is saved automatically, ready to review or reuse anytime.
One-Click Excel Export
Export the filtered valid numbers from any task directly to Excel.
Why Choose WAChecker?
Fast Bulk Processing
Process hundreds of numbers in a single pass with automatic progress tracking and result summaries.
Reliable Validation
Registration status is read from your live WhatsApp Web session, with pacing controls for stable long runs.
Clear Results
Registered, not-found, and pending states at a glance — filter and export in a few clicks.
Privacy-Focused Processing
Lists and results are processed locally in your browser — nothing is uploaded to the cloud.
WAChecker vs SheetWA
Looking for a SheetWA alternative? See how WAChecker outperforms other WhatsApp number validation tools in speed, privacy, and cost. Competitors often charge expensive monthly fees and process data in the cloud, while WAChecker provides 100% free local, secure validation with deep integration into the WASender marketing automation ecosystem.
| Features & Capability | WAChecker | SheetWA | Manual checking |
|---|---|---|---|
| Data Processing & Privacy | List and task data processed in the browser extension | ⚠️Review the provider's upload, retention, and deletion policy | ✕No list upload, but each number is handled separately |
| Task pacing | Configurable checking intervals | ⚠️Depends on the provider and plan | ✕Controlled by the person checking |
| Batch workflow | Paste or import a list, then filter results | ⚠️Confirm supported files, limits, and result states | ✕Best suited to occasional single-number checks |
| Ecosystem Integration | Seamless with WASender Bulk Sender & CRM | ⚠️Standalone Extension Only | ✕No Ecosystem Support |
Frequently Asked Questions
Find expert answers about WhatsApp number validation, active account lookups, data security, and bulk export workflows.