Check if a phone number is on Whatsapp

What we check on Whatsapp

Instant tier for phone number lookups - answered in well under a second

Whatsapp is one of the few platforms that can be checked from a phone number. The response says whether that number is registered on Whatsapp, with the moment that was established in checkedAt.

Whatsapp is in the instant tier: with ?instant=true it is among the first platforms answered, in well under a second. On a full lookup it is checked alongside every other platform and streamed as it lands.

If Whatsapp blocks the check, times out, or answers ambiguously, it is omitted from results[] entirely rather than returned as registered: false. Absence from the response means "unconfirmed", never "no account".

Who checks Whatsapp accounts

Social media accounts are checked when a signup, buyer or applicant needs to look like a real person. A social footprint that goes back years is hard to fake in bulk, so an email or phone number registered on established social platforms lowers the odds of a throwaway or synthetic identity. Fraud and trust-and-safety teams read it as one signal among several, never as proof on its own.

More on this: Fake account detection.

Inputs Whatsapp accepts

• Phone number: send it in international (E.164) format as phone, for example +14155552671. Whatsapp is checked from the number directly.

One request

curl -X POST "https://api.digifootprint.dev/v2/lookup?wait=true" \
  -H "Authorization: Bearer dfp_your_key" \
  -H "Content-Type: application/json" \
  -d '{"phone": "+14155552671"}'

What a Whatsapp result looks like

{
  "platform": "whatsapp",
  "registered": true,
  "checkedAt": "2026-10-15T09:53:15.396Z",
  "identity": "phone"
}

The full response shape - breaches, web mentions, matches versus socialMatches, and what method means - is in running a lookup.

Related platforms

Every one of these is checked in the same request as Whatsapp.

More social media platforms: Weibo, Linktree, Myspace, Snapchat, Threads · all social media

Whatsapp lookup FAQ

Can I check a phone number on Whatsapp?

Yes. Whatsapp is one of the platforms that can be checked from a phone number; send the number in E.164 format, and see the rate card for the per-platform price.

How fast is a Whatsapp check?

Fast: Whatsapp is in the instant tier, so with ?instant=true it is answered in well under a second. A full lookup streams it as soon as it lands.

What happens if Whatsapp blocks the check?

Whatsapp is left out of the response. We never report a platform we could not confirm as "not registered" - a missing platform means unconfirmed, not absent.

Does the API return the Whatsapp profile itself?

No. You get whether a profile exists for the input you sent, and when that was established. No profile contents, photos, followers or private data are collected or returned.