Get real-time access to carrier identification, location routing numbers (LRNs), number portability data, and telecom routing intelligence. Our LRN lookup solutions help telecom providers, CPaaS platforms, financial institutions, call centers, fraud prevention companies, and enterprises make smarter routing, verification, and risk-management decisions.
Whether you're routing voice traffic, validating customer phone numbers, reducing messaging costs, or preventing fraud, our carrier lookup services deliver the accurate phone number intelligence your business needs.
Gain valuable insight into carrier relationships, routing paths, and network assignments using the following ported number data.
ANI - Original ANI sent in request
LRN - Local routing number. Identity of the switch responsible for the ANI.
LINE TYPE - Identifies if the ANI is wireless, wireline, VoIP, Toll-Free, etc.
CARRIER TYPE - Identifies the type of carrier the LRN belongs to.
OCN - Operating Company Number. Access carrier ownership and network information.
LRN CITY - Identifies the city associated with the LRN.
LRN STATE - Identifies the state associated with the LRN.
PORTED STATUS - Identifies if a phone number has been ported between carriers.
PORTED DATE - Identifies the date a phone number was ported between carriers.

You can click here to test all APIs and see the results.

Simple API. Powerful Results.
Request:
{"username":"***********","password":"***********","request_date_time":"2026-05-23 13:05:17","universal_id":"APIREQ_20260523130517","request_type":"lrn_info","ani":"18176584172"}
Response:
{"username":"***********","password":"***********","responseCode":200,"transactionId":"API_REQ_20260523130517","responseDateTime":"2026-05-23 13:05:17","responseData":{"ani":"8176584172","lrn":"8173209775","coc_type":"wireless","carrier_type":"cell","ocn":"6506","carrier":"CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX","city":"Arlington","state":"TX","ported_status":"Yes","ported_date":"2023-11-28 10:13:00"}}

Optimize routing decisions and improve network efficiency through accurate telecom routing data.
Common Use Cases:

Communications Platform as a Service providers rely on accurate carrier data to optimize voice and messaging services.
Common Use Cases:

Banks, lenders, and financial technology companies use phone number intelligence to reduce fraud risk.
Common Use Cases:

Insurance carriers use telecom intelligence to verify policyholders and reduce fraud exposure.
Common Use Cases:

Insurance carriers use telecom intelligence to verify policyholders and reduce fraud exposure.
Common Use Cases:

Insurance carriers use telecom intelligence to verify policyholders and reduce fraud exposure.
Common Use Cases:

Healthcare providers use carrier lookup services to improve patient communication programs.
Common Use Cases:

Improve lead quality and campaign effectiveness using current phone number intelligence.
Common Use Cases:

Insurance carriers use telecom intelligence to verify policyholders and reduce fraud exposure.
Common Use Cases:
Please reach us at support@authenticationAPI.com if you cannot find an answer to your question.
Number portability services identify the current carrier serving a phone number, which improves routing accuracy, fraud detection, and customer verification.
Yes. Number portability data can indicate whether a phone number has been transferred between carriers.
We use cookies to analyze website traffic and optimize your website experience. By accepting our use of cookies, your data will be aggregated with all other user data.