LRN Lookup for SMS Routing

Optimize A2P message delivery with accurate carrier identification. Route SMS correctly, reduce failures, and lower messaging costs.

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Why SMS Platforms Need LRN Lookup

Number portability means the carrier serving a phone number may not be the original carrier. For SMS routing, this creates delivery challenges.

🎯

Correct Carrier Routing

Route messages to the actual carrier, not the original. Eliminate delivery failures from ported numbers that switched carriers.

📱

Mobile Detection

Identify mobile vs landline before sending. Don't waste money sending SMS to numbers that can't receive them.

💰

Cost Optimization

Select optimal routes based on carrier. Reduce costs by choosing the best aggregator for each carrier network.

📊

Better Analytics

Segment delivery metrics by carrier. Identify which carriers have issues and optimize your routing accordingly.

LRN Data for SMS Routing Decisions

Get carrier and line type data in under 200ms to make real-time routing decisions:

Enhanced LRN Lookup for SMS

# Request - Check carrier before sending SMS
curl -X POST https://api-service.verirouteintel.io/api/v1/lrn \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"phone_number": "13364086644", "include_enhanced_lrn": true}'

# Response (< 200ms)
{
  "lrn": "13364086644",
  "lrn_activated_at": "2019-03-15T00:00:00Z",
  "phone_number": "13364086644",
  "enhanced_lrn": {
    "carrier": "Verizon Wireless",
    "carrier_type": "WIRELESS",
    "ocn": "6324",
    "lata": "424",
    "rate_center": "WINSTN SAL",
    "city": "Clemmons",
    "state": "NC",
    "timezone": "-0500"
  }
}
            

SMS Routing Use Cases

LRN data powers smarter messaging decisions across the delivery pipeline:

SMS Gateway Routing - Route through carrier-specific connections for better delivery rates
Campaign Pre-validation - Scrub lists before sending to remove landlines and invalid numbers
Delivery Optimization - Choose aggregators based on carrier performance metrics
Cost Analysis - Break down messaging costs by carrier for budget optimization
TCPA Compliance - Verify mobile numbers to ensure proper consent for SMS marketing
Timezone Targeting - Send messages at optimal times based on recipient location

SMS Platform Pricing

Volume discounts designed for high-volume messaging platforms:

Standard

$0.0005

per lookup

No monthly minimums
Pay only for what you use

Enterprise

Custom

pricing

High-volume plans
Dedicated support & SLA

Start Free - No Credit Card Required

Frequently Asked Questions

Why is LRN lookup important for SMS routing?

LRN lookup identifies the actual carrier for a phone number. Ported numbers may have moved to different carriers, and sending SMS through the wrong route leads to delivery failures and higher costs.

Can LRN lookup identify mobile vs landline?

Yes, our API returns carrier_type which indicates WIRELESS, LANDLINE, or VOIP. This helps you avoid sending SMS to numbers that can't receive them, saving costs and improving metrics.

How fast is LRN lookup for real-time routing?

Our LRN API responds in under 200ms, making it suitable for real-time SMS routing decisions. For high-volume messaging, you can also pre-fetch and cache LRN data for recipient lists.

What data is included in enhanced LRN?

Enhanced LRN includes carrier name, carrier type, OCN, LATA, rate center, city, state, and timezone. This data enables sophisticated routing logic and timezone-aware messaging.