Telecom fraud prevention and network spam protection
Protect your network and subscribers with real-time fraud detection powered by carrier-grade data
US & Canada coverage
New spam numbers daily
Average response time
Stop revenue leakage from fraud
See how carriers use CallerAPI to protect their network and increase ARPU
Your Network Today
$2.5M+ Annual Loss
Average revenue loss from fraudulent calls and network abuse
25% Customer Churn
Subscribers switching carriers due to spam calls
Regulatory Risk
Non-compliance with FCC STIR/SHAKEN mandates
With CallerAPI Protection
85% Fraud Reduction
Immediate impact on revenue protection and network efficiency
40% Higher NPS
Improved customer satisfaction and retention
New Revenue Stream
Premium caller ID services for subscribers
Real-time fraud detection
See the rich data you get for every number lookup
High Risk Number
+1 (888) 221-1161
{ "data": { "phone": "+18882211161", "is_spam": true, "spam_score": 100, "reputation": "SPAM", "total_complaints": 43, "complaints": [ { "CreatedDate": "2025-03-22T16:01:58Z", "ConsumerState": "Missouri", "Subject": "Calls pretending to be government" }, // ... more complaints ... ] } }
What our customers say
"Glad to be working with the CallerAPI team! Excited to be making this a reality on a global scale!"

Gideon Ebose
Co-Founder, Rulebase (YC F24)
"Choosing CallerAPI was a big upgrade to our phone fraud prevention system. We've seen a 40% increase in accuracy"

Victor Saldarriaga
CTO, Vertical Technologies
Best price on the market
Premium
$99/mo
- 20,000 API calls/month
- Everything in Basic
- Priority support
- Access to Beta testing
Enterprise
$997/pay-per-use
- 250,000+ API calls
- Everything in Premium
- Scalable pricing
- KYC API
Caller ID API questions
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