Phone Append API Overview

Phone Append

The Datafinder API makes it simple to programmatically append phone numbers to your customer or prospect list. Both our Email and Phone APIs will also return a First and Last name and Postal Address.


Our versatile API service supports multiple contact Inputs including any combination of:

  • Full Name
  • Email Address
  • Postal Address
  • Additional Input options are discussed in the API documentation


The Phone Append API provides the following Outputs:

  • A Phone Number
  • The line type of the phone number, i.e. Landline
  • First and Last Name
  • A Postal Address (House number, street, city, state and zip)
  • A Timestamp

Try out the Datafinder Phone Append APIs

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