CheckNumber.AI 
Echtzeit-WhatsApp-Prüfer
ws $1 per 10,000 checks
- Core data available
- number, activated
- Best for
- Registration filtering and list cleaning
No-Code CSV REST API Exportierbare Ergebnisse
WhatsApp-Registrierung sofort prüfen
Bestätigen Sie, ob eine Nummer auf WhatsApp ist, und gehen Sie in Echtzeit tiefer in Aktivitäts- und Profilsignale.
Choose from three WhatsApp task types: registration, activity and Business signals, or optional profile-photo attributes. Upload E.164 phone numbers by CSV or API, then export each result against its original input row.
E.164
Phone input
From $1
Per 10,000 checks
CSV + API
Workflow
Submitted number +1415••••0100
Registration status yes / no
Activity recency time / days
Business status yes / no
Profile data when available
Echtzeit-WhatsApp-Prüfer WhatsApp Tage-Prüfer WhatsApp Alters- & Geschlechtsprüfer Kein Konto, keine Nummer, keine SIM nötig
Jede Prüfung läuft über offizielle Plattform-APIs auf unserer eigenen Infrastruktur. Sie verbinden, hinterlegen oder verwenden niemals Ihr eigenes Konto, Ihre Telefonnummer oder SIM-Karte – laden Sie einfach Ihre Liste hoch oder rufen Sie die API auf und erhalten Sie Ergebnisse.
Was CheckNumber für WhatsApp erkennt
Registration status
Confirms whether the phone number has a registered WhatsApp account (yes or no), so you can filter out unregistered numbers before outreach.
Activity duration
Returns how many days the WhatsApp account has been active, helping you gauge how established and live the user is.
WhatsApp Business account
Flags whether the number is a WhatsApp Business account, so you can separate businesses from personal users.
Business status
Returns the available Business flag with activity time and active-day signals.
Profile photo
Returns the public WhatsApp profile photo URL when available. Automated analysis may provide the probabilistic visual estimates described below.
Photo attributes
From an available public profile photo, provides probabilistic age-range and gender estimates plus a picture-type classification such as portrait, pet, or object.
Was Sie prüfen können
Choose the WhatsApp result depth you need
Each task accepts E.164 phone numbers but returns a different level of data. Start with the narrowest result that supports your workflow.
WhatsApp Tage-Prüfer
ws_active $1.8 per 10,000 checks
- Core data available
- number, activated, activetime, activedays, business
- Best for
- Account segmentation and operational review
WhatsApp Alters- & Geschlechtsprüfer
ws_avatar $3.8 per 10,000 checks
- Core data available
- number, activated, age, avatar, category, gender, hair_color, skin_color
- Best for
- Authorised profile-enrichment workflows
| Product | Task type | Input | Core data available | Best for | Current price |
|---|---|---|---|---|---|
| Echtzeit-WhatsApp-Prüfer API documentation | ws | Phone numbers in E.164 format | number, activated | Registration filtering and list cleaning | $1 per 10,000 checks |
| WhatsApp Tage-Prüfer API documentation | ws_active | Phone numbers in E.164 format | number, activated, activetime, activedays, business | Account segmentation and operational review | $1.8 per 10,000 checks |
| WhatsApp Alters- & Geschlechtsprüfer API documentation | ws_avatar | Phone numbers in E.164 format | number, activated, age, avatar, category, gender, hair_color, skin_color | Authorised profile-enrichment workflows | $3.8 per 10,000 checks |
Core WhatsApp data
Core data available by task type
These are the main data categories users can receive from each WhatsApp product. Exact response keys and casing remain in the API documentation.
Registration check
ws - Submitted number
- The phone number supplied for the check.
- Registration status
- Whether the number returns an active WhatsApp account result.
Activity check
ws_active - Account activity
- Available activity time and active-days information.
- Business status
- Whether the result is associated with an active WhatsApp Business account.
- Business status
- The available Business flag in the current ws_active output.
Profile check
ws_avatar - Public avatar
- The available WhatsApp profile-photo URL.
- Age and gender estimates
- Probabilistic attributes derived from an available public profile photo.
- Picture attributes
- Available picture type, hair-colour, and skin-tone estimates.
Optional fields can be empty, and image-derived attributes are estimates rather than verified facts. Use only data you are authorised to process and do not treat a WhatsApp result as proof of identity, consent, or permission to contact a person.
Run a WhatsApp batch in three steps
The no-code platform and API support the same product choices. Pick the interface that fits your volume and operational workflow.
- 1
Prepare E.164 numbers
Provide one international phone number per row with a leading plus sign and country code.
- 2
Select a task type
Choose registration, activity, or profile output according to the minimum data your workflow needs.
- 3
Export mapped results
Download the completed result file or retrieve task status through the API and match each result to its input number.
Häufiger Anwendungsfall
Verbessern Sie die Listenqualität für WhatsApp vor der Ansprache
Bereinigen Sie Kontaktlisten, priorisieren Sie Business-Konten oder personalisieren Sie Outreach, bevor Sie schreiben.
No-Code CSV REST API Exportierbare Ergebnisse
Signal 1
Registrierungsprüfung — bestätigen Sie in großen Mengen, ob jede Nummer ein registriertes WhatsApp-Konto hat.
Signal 2
Aktivität und Business — sehen Sie die Aktivitätsdauer des Kontos in Tagen, ob es ein WhatsApp-Business-Konto ist, und die Kontosignatur.
Signal 3
Automatisierte Bildanalyse — bei einem öffentlichen Avatar kann das Modell probabilistische Schätzungen zu Altersspanne, Geschlecht und Bildtyp liefern.
WhatsApp – Häufige Fragen
Can I check phone numbers on WhatsApp in bulk?
Yes. Upload a CSV of up to hundreds of thousands of numbers or call the REST API, choose the task type you need, then download a result file with a registration verdict for every number. You are billed only for successful checks.
Does checking a number send a WhatsApp message or notify the person?
No. The check is passive and reads registration and public profile signals only. Nothing is sent to the number, and the account owner is never messaged or notified.
Can I tell WhatsApp Business accounts from personal ones?
Yes. The activity task type returns a WhatsApp Business flag alongside available activity time and active days, so you can segment businesses from individual users.
Is there a free trial for the WhatsApp checker?
Yes. New accounts receive 1,000 free checks on signup with no credit card, and every WhatsApp check is pay-as-you-go with no monthly fee, and the credits you top up never expire.
Empfehlen & 10 % verdienen
10 % Provision auf jede Aufladung — lebenslang
Teilen Sie Ihren Empfehlungslink. Wenn jemand sich darüber registriert und auflädt, erhalten Sie sofort 10 % des Betrags als Bonusguthaben — kein Verfallsdatum, kein Limit.
- 10 % Provision auf jede Aufladung Ihrer Empfehlungen
- Bonusguthaben wird automatisch angewendet
- Lebenslanger Empfehlungslink — dauerhaft verdienen
10%
So funktioniert esProvision pro Aufladung