Master phone line type detection to reduce SMS marketing costs by 40%, prevent 87% of fraudulent signups, and boost campaign effectiveness by 73% with real-time carrier intelligence.
Your marketing database is bleeding money. Right now, 24-31% of your phone contacts are landlines that will never receive a single SMS message. Another 8-12% are VoIP numbers frequently used for fraudulent signups. Every SMS sent to these numbers is wasted money—typically $0.007-$0.015 per message that could add up to thousands in monthly losses.
But here's the critical insight: SMS marketers who implement line type detection don't just stop wasting money—they see 73% higher engagement rates, 40% cost reduction, and 87% less fraud. The difference comes from understanding that not all phone numbers are created equal in marketing.
Key Insight: SMS marketing campaigns that filter out landlines and VoIP numbers achieve 96% delivery rates compared to 68% for unfiltered lists.
24-31% of typical marketing databases contain landline numbers. Every SMS sent to these numbers fails instantly, wasting your entire SMS budget without any chance of delivery or engagement.
Business VoIP services like Vonage, RingCentral
Virtual numbers like Google Voice, TextNow
Real-time access to 2,300+ carrier databases worldwide
232 countries with 99.6% accuracy rate
50ms response time for instant validation
Machine learning models detect suspicious patterns
// Detect phone line type with Node.js
const axios = require('axios');
async function detectPhoneType(phoneNumber) {
try {
const response = await axios.post('https://api.phone-check.app/v1/validate', {
phone: phoneNumber,
include_type: true,
include_carrier: true,
include_fraud_risk: true
}, {
headers: {
'Authorization': 'Bearer YOUR_API_KEY',
'Content-Type': 'application/json'
}
});
const data = response.data;
return {
phone: data.phone,
type: data.type, // 'mobile', 'landline', 'voip', 'toll_free'
subtype: data.subtype, // 'fixed_voip', 'non_fixed_voip'
carrier: data.carrier.name,
isValid: data.is_valid,
fraudRisk: data.fraud_risk // 'low', 'medium', 'high'
};
} catch (error) {
console.error('Phone validation failed:', error);
return null;
}
}
// Usage example
const result = await detectPhoneType('+1234567890');
if (result.type === 'mobile' && result.fraudRisk === 'low') {
// Safe to include in SMS campaign
addToSmsCampaign(result.phone);
} else if (result.type === 'landline') {
// Add to email campaign instead
addToEmailCampaign(result.phone);
}{
"phone": "+1234567890",
"type": "mobile",
"subtype": null,
"is_valid": true,
"carrier": {
"name": "Verizon Wireless",
"country": "US",
"network_type": "mobile"
},
"fraud_risk": "low",
"porting_history": [],
"risk_indicators": []
}First, verify that each phone number is properly formatted and potentially active. This catches typos and obviously invalid numbers.
Classify each valid number by type: mobile, landline, VoIP, or toll-free. This determines the appropriate marketing channel.
Evaluate each number for fraud indicators using machine learning models that analyze patterns, carrier history, and risk factors.
Create targeted campaigns based on line type and risk profile. This ensures maximum deliverability and engagement.
Stop wasting marketing budget on undeliverable messages and fraudulent signups. Implement phone line type detection to achieve 96% deliverability, 40% cost savings, and 87% fraud reduction.
Phone-Check.app achieves 99.6% accuracy across 232 countries by maintaining real-time connections to 2,300+ carrier databases worldwide. Our system processes millions of validations daily, continuously learning and improving detection accuracy.
Fixed VoIP numbers are tied to a physical business address (Vonage, RingCentral) and generally legitimate. Non-fixed VoIP numbers are virtual numbers (Google Voice, TextNow) that can be obtained anonymously and are associated with 87% of fraudulent signups.
Most customers implement phone validation in under 30 minutes. Our REST API with SDKs for major programming languages makes integration straightforward. We also provide pre-built integrations for popular marketing automation platforms.
Yes, our phone validation service is fully compliant with GDPR, CCPA, and TCPA regulations. We only use phone data for validation purposes and maintain comprehensive security and privacy controls.