Carrier Lookup API

Identify voice and messaging carriers for any US phone number. Get carrier name, line type, and porting history with 99%+ accuracy.

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What is Carrier Lookup?

Carrier lookup identifies which telecommunications company serves a phone number, including line type and porting history.

Carrier Name

Identify the carrier serving the number - Verizon, AT&T, T-Mobile, and hundreds of others.

Line Type

Detect mobile, landline, or VoIP. Essential for SMS delivery and fraud prevention.

Porting History (FREE)

lrn_activated_at shows when the number was ported. Key fraud indicator included FREE.

Location Data

City, state, rate center, LATA, and timezone for the phone number.

Carrier Lookup API Example

Use LRN lookup with enhanced data to get carrier information:

Carrier Lookup via LRN API
# Request
curl -X POST https://verirouteintel.com/api/v1/lrn \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"phone_number": "13364086644", "include_enhanced_lrn": true}'

# Response
{
  "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"
  }
}
carrier The carrier name serving the number
carrier_type WIRELESS, LANDLINE, or VOIP
lrn_activated_at When the number was ported (FREE)
Location Data City, state, OCN, LATA, rate center, timezone

Line Type Detection

Identify whether a number is mobile, landline, or VoIP:

WIRELESS (Mobile)

Cell phones on carrier networks. Highest deliverability for SMS. Supports voice and text.

LANDLINE

Traditional wired phone lines. Voice only by default. Some support text-to-landline.

VOIP

Internet-based phone numbers. Higher fraud risk. May not support SMS verification.

Carrier Lookup Pricing

Carrier data is included with LRN lookup:

Standard

$0.0005
per LRN lookup

Includes carrier + porting history
No monthly minimums

Enterprise

Custom
pricing

High-volume plans
Dedicated support & SLA

Start testing free

Frequently Asked Questions

What is carrier lookup?

Carrier lookup identifies which telecommunications company serves a phone number. It returns carrier name, line type (mobile/landline/VoIP), and network information.

Can it detect VoIP numbers?

Yes! The carrier_type field identifies mobile, landline, and VoIP numbers. VoIP detection is valuable for fraud prevention.

Is porting history included?

Yes! Every LRN lookup includes lrn_activated_at FREE, showing when the number was ported to its current carrier.