Integrate Caller ID functionality into your applications, platforms and systems

Enter in any 10-digit phone number from the US and instantly receive the caller’s name and address. Easily verify a caller’s information and prevent typos and other erroneous information from entering your database. In addition, accessing a caller’s info in real-time allows you to quickly identify customers already in your database and access information crucial to the call agent.

Caller ID Example Request

{  "phone":  "555-555-5555"  }

Caller ID Example Response

{  "person":  {
"name": {
"firstname": "John"
"lastname": "Smith"
"address": {
"street": "123 Main Street",
"city": "Orlando",
"state": "FL",
"zip": "32803",


per lookup

At The Data Group, we pride ourselves on offering the lowest, most affordable prices on the market without sacrificing data quality. In addition to our low prices, we also provide our customers an industry-leading 55% match rate.

Secure, User-Friendly, and Efficient Data Enrichment

Enhanced User Experience

Know who’s calling before you answer the call. With our Caller ID API, you have the power to screen calls and route them to the correct agent or department.  Now you can prioritize callers and provide them with a personalized experience based on data within your CRM and additional data enhancements offered through our API.

Improved Security

Our Caller ID API helps you recognize known bad numbers within your crm and easily link and block unwanted numbers and callers from wasting agents time. This adds an extra layer of security to your application or service and helps protect your users from potential threats.

TCPA Compliance
Email Append Services

Operational Efficiency

For businesses, having Caller ID information can streamline and greatly improve internal processes. For instance, when a customer calls and your internal database shows outdated or missing data it can be brought to the agents attention and updated during the course of the call. Keeping updated customer data is crucial to success.

Advanced Analytics

With the help of our Caller ID API, you can analyze call patterns, track marketing campaign responses, or even inform sales strategies – all invaluable tactics to optimize your operations and increase your profitability.

Why The Data Group

Nation's Largest Telephone File

Over 500,000,000 updated US phone numbers available

Millions of Daily Updates

Our nationwide file is updated every 24 hours to be one of the largest and most accurate in the world

Landline, Cell and VOIP

Discover the type of phone you’re contacting – a landline, cell, or VOIP

Best Prices Guaranteed

Get access to unbeatable prices at $0.02 per lookup

Explore Our Services

In addition to our Caller ID API, we also offer real-time batch processing for phone appends and phone lookups. If you prefer to have your data in-house, our complete telephone file is available for onsite installs including frequent updates.

Tap into our up-to-date database of over 500 million phone numbers and easily stay in contact with your customers throughout the year as phone numbers change and new numbers become available.

Our advanced algorithms and extensive databases fill in the gaps of your data and transform bare phone numbers into rich customer profiles in an instant, giving you valuable insights to make your next move.


A Caller ID API is a software interface that enables applications to retrieve and display the identity or phone number of incoming calls, enhancing user experience and offering the potential for advanced call screening or management.

Yes, a Caller ID API can assist in identifying and filtering spam or fraudulent calls by cross-referencing incoming numbers with databases of known spam or fraudulent numbers, thereby enabling more efficient call management.