Proweblook Whatsapp Contact Checker API
Telephony & SMS · Operational · 30d uptime 100%
Check if any number is on WhatsApp in real time. Free, no signup, no message sent. 180+ countries, 99.7% accuracy. Bulk & REST API available.
Trust signals
Pricing
FREEMIUM
Auth
API_KEY
CORS
No
Rate limit
Unknown
Health
646ms
Trust score
87 (B)
Last checked Oct 19, 2026 · uptime 24h 100% / 7d 100% / 30d 100%
Strong candidate; weakest signal is CORS.
Links
- Homepageproweblook.com/whatsapp-number-checker
- Documentationproweblook.com/whatsapp-number-checker
- Base URLproweblook.com/whatsapp-number-checker
Integration checklist
- Auth is API_KEY
- No CORS — route calls through your backend.
- Rate limit: Unknown