Mobile Number Verification & WhatsApp Check

A phone number is often the first thing a customer gives you — and the easiest to fake. Verifying that a mobile number is valid and active, and checking whether it is on WhatsApp, helps you cut fake signups, improve deliverability, and reach customers on the channel they actually use.

What you can check

• Whether a mobile number is valid and active.
• Whether the number is registered on WhatsApp.
• Basic line details where available, to flag risky or disposable numbers.

POST https://api.bilapi.com/v1/whatsapp-check-api
X-Bilapi-Api-Key: <your_api_key>
Content-Type: application/json

{
  "mobile": "9876543210"
}

{
  "status_code": 200,
  "success": true,
  "data": {
    "mobile": "9876543210",
    "is_whatsapp": true
  }
}

Where it helps

• Signup — block fake or invalid numbers before they enter your system.
• Communication — route to WhatsApp where available, SMS otherwise.
• Risk — flag numbers that look disposable or high-risk at onboarding.