Know Who's Texting Before It Costs You
Advanced SMS fraud detection API with phone validation, carrier intelligence, and real-time risk scoring. Stop fraudulent texts before they reach your users.
$10B+ fraud prevented
99.9% uptime
Real-time API
Powerful Features
Everything you need to succeed with CheckSender
Phone Number Validation
Instantly verify if numbers are valid, active, or high-risk. Detect VoIP, landlines, and carrier information.
Dynamic Risk Scoring
Real-time fraud risk assessment based on carrier intelligence, behavioral patterns, and threat feeds.
Carrier Intelligence
Deep carrier data including network type, porting history, and known fraud indicators from telecom partners.
Threat Intelligence Feeds
Enterprise-grade threat data from FTC, FCC, and industry partners. Updated continuously with new fraud patterns.
Webhook Alerts
Real-time notifications for high-risk numbers and emerging fraud patterns. Integrate seamlessly with your systems.
Bulk Screening
Process thousands of phone numbers simultaneously with enterprise-grade performance and accuracy.
Simple, Transparent Pricing
Choose the plan that works best for you. Upgrade or downgrade anytime.
Free
Basic phone validation
$0/month
- 1,000 lookups/month
- Basic phone validation
- Valid/invalid/VoIP detection
- API documentation
- Community support
Most Popular
Developer
Advanced fraud detection
$49/month
- 10,000 lookups/month
- Dynamic risk scoring
- Carrier intelligence
- Fraud pattern detection
- Email support
- Webhook alerts
Business
High-volume screening
$199/month
- 100,000 lookups/month
- Threat intelligence feeds
- Bulk screening API
- Priority support
- Custom rules
- Advanced analytics
Stopping SMS Fraud at Scale
SMS fraud costs businesses over $10 billion annually. Existing tools miss sophisticated fraud schemes that adapt faster than traditional rule-based systems. Our AI-powered API combines real-time carrier data, behavioral analysis, and threat intelligence to stop fraud before it happens.
$10B+
Annual SMS Fraud
99.9%
API Uptime
50ms
Response Time
95%
Fraud Detection Rate
Get in Touch
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Protect Your Users Today
Start with 1,000 free lookups and see the difference real-time fraud detection makes