Zelnum
Realtime & bulk validation for WhatsApp, Telegram and phone numbers
Freemium - Free tier available for limited checks; paid plans and pay-as-you-go credits for higher-volume or enterprise usage.
About Zelnum
ZelNum validates phone numbers and account presence on WhatsApp, Telegram and 40+ platforms in real time or in bulk. Use it to verify phone ownership, detect carrier data, clean and deduplicate contact lists, and integrate checks into workflows or apps via API. Supports single lookups, CSV bulk imports and programmatic calls to keep marketing lists, user databases and fraud detection pipelines accurate.
Key Features
- Realtime and bulk WhatsApp & Telegram account checks
- Phone number validation and carrier detection
- Supports 40+ platforms for cross-platform account verification
- API-first workflow integration plus web bulk uploads
- List cleaning: dedupe, validate and prepare contacts for campaigns
Who is this for?
Marketers, growth teams, developers and ops teams needing phone/account validation or list-cleaning for messaging campaigns and fraud prevention.
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Pricing
FreemiumFree tier available for limited checks; paid plans and pay-as-you-go credits for higher-volume or enterprise usage.
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