Launched October 21, 2025
WhatsApp Number Checker
Professional and free WhatsApp number check online service & API
One time feeMarketing1,611 impressions#12 of its week
CheckNumber.AI provides professional and free WhatsApp number check online service, and provides a professional WhatsApp Number Checker API that can quickly check and detect WhatsApp number in bulk.
CheckNumber.AI offers real-time bulk verification of WhatsApp numbers (and 50+ other platforms) via web upload or REST API.
- for
- Businesses that need to clean or enrich phone-number lists for marketing, fraud prevention, or outreach.
- pricing
- pay-as-you-go · free trial
works withREST APIWhatsAppTelegramViberLINEZaloFacebookInstagramAmazonBinance
Key features
5 features of WhatsApp Number Checker
- Real-time WhatsApp check — Detect active WhatsApp accounts instantly with live queries, no cached data.
- Bulk CSV upload — Upload TXT/CSV files through the web UI and receive results in minutes.
- REST API integration — Programmatically submit numbers and receive JSON results for automated workflows.
- Multi-platform coverage — Same workflow supports verification on 50+ messaging, social and crypto platforms.
- Exportable results — Download pass/fail/all results as CSV for easy import into CRMs or marketing tools.
Use cases
- Clean CRM contact lists by removing inactive WhatsApp numbers
- Screen messaging-app audiences for regional ad campaigns
- Provide fraud teams with phone-number activity signals before KYC
WhatsApp Number Checker FAQ
How many free checks can I try?+
CheckNumber.AI provides a free trial of 1,000 checks for WhatsApp number verification.
Do I need to write code to use the service?+
No, you can use the no-code CSV upload interface; an API key is only needed for REST integration.
Is my data stored after verification?+
Uploaded numbers are used only for the check and are not stored long-term or shared.
What countries are supported?+
All international phone formats are supported, covering 200+ regions.
Summarized by DevHunt from checknumber.ai · Sep 28, 2026. Details may change; check the official site.
