Identify phone numbers with accuracy and ease.

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Caller Identification API

Caller Identification API provides an incoming caller’s identity, including phone metadata (carrier, line type, prepaid status, etc.), name, demographics, and current address. Typical use cases for this phone number lookup API include caller tracking, identification, and call routing.


Unlock Powerful Use Cases with Caller Identification API

Caller Identification

Get details associated with a number to build an agent screen pop, generate post-call analytics, or support call-tracking and attribution models.

Call Routing and Prioritization

Route known and unknown calls to the right agent or sales team member in real-time based on the phone metadata or caller’s demographic and location details.


Validity Checks

Shows whether a number is valid, assigned to a carrier, and is in-service.

Line Type

Provides seven unique line types including: mobile, fixed and non-fixed VoIP, landline, premium, toll-free and voicemail service.

Prepaid Status

Indicates whether a mobile number is part of a prepaid plan.


Identifies all US-based carriers including MVNOs.

Current Address

See the current address of your contact.


Trestle’s Caller Identification API offers several benefits, especially for businesses and service providers. Here are some key advantages of using our phone number lookup API:

  • Call Authentication

    Caller Identification API can help authenticate incoming calls by providing information about the caller. By verifying the caller's identity, businesses can establish trust and ensure the security of their communication channels.

  • Call Routing and Prioritization

    Caller Identification API allows businesses to route calls more efficiently. By identifying callers and their specific needs, companies and call centers can direct calls to the appropriate department or agent, reducing wait times and improving overall call handling.

  • Analytics and Insights

    Caller Identification API provides valuable data and insights about incoming calls to gain a deeper understanding of customer behavior, optimize operations, and make data-driven decisions.

  • Enhanced Customer Experience

    Caller Identification API enables businesses to personalize and improve the customer experience. With caller information, companies can greet customers by name, access their account details, and provide personalized service. This enhances customer satisfaction and builds stronger relationships.

  • CRM Integration

    Caller Identification API can be integrated with customer relationship management (CRM) systems, allowing businesses to store and access caller information alongside other customer data. This integration streamlines processes, improves data accuracy, and enables comprehensive customer profiling.

Why Trestle?