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Tutorial

How to Set Up Registrant Monitoring on WhoisFreaks

Written By Qasim, WhoisFreaks Team Published: July 14, 2026, Last Updated: July 14, 2026

Registrant monitoring tracks all domains owned by a specific registrant; identified by name, email, or company. It detects when the registrant acquires new domains, drops existing ones, or when domains in their portfolio get updated.

This is particularly useful for tracking competitor domain portfolios, monitoring your own organization's domain footprint, or watching domains owned by known threat actors.

This guide walks you through setting up registrant monitoring from scratch.

Prerequisites

Before setting up registrant monitoring, you need:

Pricing Plans

Plan Monitors Price/Year
Registrant Monitoring (5 Monitors) 5 $250
Registrant Monitoring (10 Monitors) 10 $400
Registrant Monitoring (25 Monitors) 25 $800

Purchase a plan

  • Log in to your WhoisFreaks account
  • Navigate to Billing and go to Monitoring from the sidebar
  • Select the Registrant Monitoring plan that suits your needs
  • Complete the checkout

Once your subscription is active, you can start adding registrants to monitor immediately.

Visit the Registrant Monitoring product page for full details.

Setting Up Your Registrant Monitor

Step 1: Navigate to the Registrant Monitor

Log in to your WhoisFreaks account and navigate to the Monitoring section. Click on the Registrant Monitor tab.

The monitoring dashboard with the Registrant Monitor tab selected, showing the form fields for Name, Email, Company, and optional fields]

Step 2: Add a Registrant to Monitor

Fill in at least one of the required fields to identify the registrant:

Field Description Required
Registrant Name Full name of the domain registrant At least one required
Registrant Email Email address used for registration At least one required
Registrant Company Organization or company name At least one required

You can also fill in optional fields for more precise matching:

Field Description
Phone Registrant's phone number
Fax Registrant's fax number
Zip Code Postal/ZIP code
Country Country name
State State or province
City City name

Click "Add to Monitor" when ready.

Registrant form with Name and Email filled in, and optional fields visible below
Tip: The more fields you fill in, the more precise the monitoring results. Using just a common name might return many unrelated domains.

Step 3: View Your Monitored Registrants

After adding a registrant, they appear in the monitoring table:

Column Description
Registrant Name, email, or company (whichever was provided) with field type badge
Last Changed When domain changes were last detected
View Changes Opens the change history
Status Active/Inactive toggle
Actions Edit and Delete buttons

Each registrant row shows a badge indicating which field types were used to identify them (Name, Email, Company).

Registrant monitoring table showing registrants with field type badges (Name, Email, Company)

Step 4: Edit Registrant Details

To update optional fields or correct information:

  1. Click the "Edit" button on the registrant's row
  2. The edit panel opens showing all fields
  3. Update any optional fields (Phone, Country, State, City, etc.)
  4. Toggle Active on/off as needed
  5. Click "Edit Monitor" to save
The registrant edit panel showing all fields including optional ones

Step 5: View Registrant Changes

When changes are detected, click "View Changes" to open the change history.

The registrant change's view shows four categories, similar to brand monitoring:

Category Description
Domains Added New domains registered by this registrant
Domains Dropped Domains no longer owned by this registrant
Domains Updated Domains with WHOIS record changes
Domains Discovered Previously unknown domains found for this registrant
View changes button
Registrant changes modal showing date sections with domain categories expanded, each with domain names listed

Each domain in the list has a lookup dropdown for quick access to WHOIS, DNS, SSL, and history tools; identical to the brand monitor's lookup feature.

Step 6: Download Changes as JSON

Each date's changes can be downloaded as a JSON file.

Click the "Download As JSON" button below each date's change entry. The file contains the complete domain lists for all four categories.

Download As JSON button in a registrant change entry

Step 7: Set Up Telegram Notifications

Registrant monitoring supports Telegram notifications for change alerts.

  1. Find the Telegram Notifications card in the registrant monitor section
  2. Click the Telegram login widget to link your account
  3. Toggle "Enable Notifications" on
Telegram Notifications card for registrant monitoring
Input telegram id to connect
Connected telegram in profile

You will receive Telegram messages whenever new brand changes are detected.

You will receive a Telegram message whenever new domain changes are detected for your monitored registrants.

Step 8: Pause or Remove a Registrant Monitor

Pause: Toggle the Status switch to Inactive. Monitoring stops but the registrant stays in your list.

Remove: Click the trash icon to permanently delete the monitor and free up a slot.

Registrant row with the Active toggle and delete button

Summary

Step Action
1 Navigate to Registrant Monitor tab
2 Enter registrant name, email, or company
3 Optionally fill in phone, country, city, etc.
4 Click "Add to Monitor"
5 View changes when detected
6 Download changes as JSON
7 Set up Telegram notifications
8 Pause or remove monitors as needed

Registrant monitoring runs daily. Each scan checks the global WHOIS database for domains matching the registrant's identity and reports any additions, drops, or updates.

For more information, visit the Registrant Monitoring product page.