NumberChecker.cloud

NumberChecker.cloud is a bulk contact verification platform focused on WhatsApp number checking. Upload a CSV or Excel list to identify which phone numbers have an active WhatsApp account, then download the results as a labelled file. The WhatsApp checker does not require connecting a WhatsApp account, scanning a QR code, or installing software. WhatsApp Number Checker features: Bulk CSV and Excel uploads Active/inactive WhatsApp status No WhatsApp account login required REST API for automated workflows Worldwide number support Downloadable results High-volume batch processing $1 per 40,000 WhatsApp checks NumberChecker.cloud also provides additional contact verification services including phone number activity detection, WhatsApp age and gender signals, RCS status, iOS status, and Gmail, Yahoo and Outlook email verification. The platform is designed for marketers, sales teams, data teams and developers who need to clean contact lists before outreach or integrate verification into their own applications.