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Make | Phone Validation API Integration Guide

2 min read

By integrating Trestle’s Phone Validation API into your Make.com scenario, you can automate carrier lookups, flag prepaid or VoIP lines, and ensure your communication workflows only target valid, high-quality numbers in real time. This guide will help you get started with integrating Phone Validation API on Make.com.

If you are looking to integrate with our Real Contact product, please see our Real Contact Integration Guide.

What You Need Before You Start #

  • An active Make.com account.
  • Access to Trestle’s Phone Validation API (sign up on the Trestle Developer Portal).
  • A data source (form, CRM, database, or spreadsheet) capturing at minimum:
    • Phone Number

Setting Up Your Scenario in Make.com #

First, log in to Make.com. Then, create a new scenario and add your trigger event (e.g., “Watch Rows” on Google Sheets).

Find Trestle in the app list and select the Phone Validation API action.

Enter your Trestle API Key to connect your account.

You can then map out your parameters. Select the phone number field from your data source to be validated by Trestle.

Use Phone Validation Results in Your Workflow #

You can use the metadata returned by Trestle to branch or filter your workflow paths. Here are some examples:

  • Filter by Line Type: Mobile phones could continue to a high-priority SMS campaign, while non-fixed VoIP numbers could be diverted to a manual review queue to check for potential fraud. 
  • Automatic Updates: Update your CRM, spreadsheet, or contact record with the carrier name, line type, or Phone Activity Score for future segmentation.
  • Filter by Phone Activity Score: The Phone Activity Score ranges from 0-100, where higher scores indicate greater confidence that a phone number is currently active. Numbers scoring 70+ could be prioritized for outreach, while those below 30 should be filtered out.
  • Send Notifications: Create alters for specific line types, activity scores, or carriers.

Troubleshooting & Support #

Refer to the API documentation for detailed endpoint, request, and response information. For issues or questions, contact support@trestleiq.com.