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WhatsApp Number Checker API

Check if a phone number is registered on WhatsApp

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Check a phone number before you message it on WhatsApp. One request returns validity, line type, carrier, location, WhatsApp registration, and business-account detection. For list cleaning and campaigns. Send an E.164 number to GET /wavalidation. 20 free requests per application, then $0.003 each, or $9.99/month for 5,000 and $29.99/month for 30,000. Try 5 live checks per IP a day.

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PH · launched Oct 26, 2026 · 1 upvote (top 67%)

Similar launches

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Could you build this?

Partial The API shell, carrier, and line-type lookups can wrap commercial HLR providers, but WhatsApp registration detection has no official public endpoint and needs unofficial protocol access.

What it would actually take: The wrapper and billing are simple to build, and line-type and carrier data can be bought from HLR/number-intelligence vendors. Accurate WhatsApp registration checks require reverse-engineering or maintaining WhatsApp's unofficial client protocol, which needs networking and protocol expertise and carries account-ban and terms-of-service risk.

Competitors

Other products that read as similar to this one : 461 launches clear the similarity bar, closest 8 shown.

Attention rank: #158 of 462 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 307 days after the earliest competitor.

Other launches for this product