LRN Lookup API

Get Local Routing Number (LRN) data for accurate phone number routing and portability information.

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What is LRN Lookup?

Local Routing Number (LRN) lookup provides essential routing information for phone numbers, including portability data and enhanced network details for accurate call routing and billing.

Key Features:

  • Real-time LRN data retrieval
  • Number portability detection
  • Enhanced LRN data with carrier details
  • Messaging provider integration
  • High-accuracy routing information
  • Bulk lookup capabilities

Use Cases:

  • Call routing optimization
  • Billing and cost management
  • Number portability verification
  • Carrier identification
  • Fraud prevention and security
  • Telecom infrastructure planning
🚀 GraphQL Available

Access LRN data through our powerful GraphQL API for flexible queries and efficient data fetching. Perfect for modern applications requiring precise data control.

Explore GraphQL →
🏢 Enterprise Pricing

Need high-volume access or custom features? Our Enterprise plans offer dedicated support, competitive rates, and SLA guarantees.

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API Example

GET /api/v1/lrn?phone_number=+15551234567&include_enhanced_lrn=true

Response:
{
  "lrn": "+15551234000",
  "phone_number": "+15551234567",
  "enhanced_lrn_data": {
    "carrier": "Verizon Wireless",
    "carrier_type": "mobile",
    "city": "New York",
    "state": "NY",
    "zip_code": "10001",
    "county": "New York",
    "timezone": "-0500",
    "rate_center": "NYC",
    "lata": "132",
    "ocn": "921"
  }
}

GraphQL Query

query {
  lookupLrn(
    phoneNumber: "+15551234567"
    includeEnhanced: true
    includeMessaging: false
  ) {
    number
    lrn
    enhanced {
      carrier
      carrier_type
      city
      state
      zip_code
      county
      timezone
      rate_center
      lata
      ocn
    }
  }
}