Add Phone Numbers to Your Marketing and Customer List

Datafinder's Automated Phone Append Service, starting at $0.04 per match

Now you can add Phone Numbers or Reverse Phone Number information to your customer or prospect list to better communicate and market your products or services.

Create Your Account Today »
Automated Data Append
Use Datafinder's easy to use, self-serve data tools to append the data you need.
Powered by LifeData®
Append your customer and prospects list with LifeData®, the most reliable and accurate data available.
Available as RESTful API
Use Datafinder robust API services to append data in realtime.

Phone Append

A successful marketing campaign is dependent upon knowing who to target and delivering a message that resonates with your audience. Datafinder’s Phone Append service adds phone numbers and line type to your customer and prospects list. Datafinder enables multichannel marketing campaigns and gives you insights to improve the targeting of your marketing programs.

Inputs can include:

  • First/Last Name
  • Postal Address
  • Email Address
  • Facebook handle

Data returned for Phone Append

Field Description
Phone Number Phone Number - Example: 5551234567
Line Type Land Line or Mobile
Returns a Phone Number associated with your Input data when available.
How can a Datafinder's Phone Append Help me?

Phone Append and Reverse Phone Append

  • Phone Append

    Datafinder makes it simple to append phone numbers to your customer and prospects list. With our self-serve tool, you can easily upload names and postal addresses, and append phone numbers and other LifeData® attributes to your list. View Full List of Returned Attributes for Phone Append

  • Reverse Phone Append

    You can also use Datafinder to enhance your customer phone list with email addresses, postal addresses and other LifeData® attributes so you can gain insights and connect with your customers in more ways.

  • See the Price Estimator for estimated match rates and pricing or Create Your Account Today » .

Datafinder's Phone Append

Datafinder makes it easy to add LifeData®

Datafinder is a SaaS based self-service platform that supports file upload and API access to make adding Phone Numbers to your file easy and efficient. Try the Price Estimator to see estimated match rates and pricing.

Create your Free Account to get started
Here's what Datafinder offers:
  • Consumer Data Append

    Append consumer contact data, such as email address, phone number and postal address, as well as household financial data and demographic data to your customer lists with match rates as high as 85 percent.

  • Online Audience Builder

    Do you have a high quality list of customers or prospects but you're only reaching a small percentage of your list through online ads? Datafinder appends multiple contact data points to improve online match rates by up to 2-3x.

  • Data Hygiene and Validation Services

    Clean up your data, fix contact data and validate email addresses and phone numbers.

  • Datafinder APIs

    Use all of the services above through real-time RESTful API endpoints. Get access to the data you need where you need it so you can easily act on it.


Create your free account

Please complete all fields below.