Blocking outbound calls

Zoom Phone allows account owners and administrators to maintain control over outbound calling by managing a blocked list of phone numbers and prefixes. This feature helps organizations prevent calls to specific numbers or entire regions, ensuring compliance with company policies and reducing unwanted outbound communications. Blocked numbers can be managed at the account level, applying restrictions across all phone users in your organization.

Learn more about managing blocked inbound calls.

Requirements for blocking calls on Zoom Phone

• Account owner or admin privileges
• Either a Zoom Workplace license with Phone included, or a standalone Zoom Phone calling plan

Effects of blocking calls

• Blocked calls will appear in the admin call log and associated phone user's call history.
• If a phone user calls a blocked outbound phone number, they will hear the same generic message stating that the person they are trying to reach is not available.

How to manage blocked phone numbers and prefixes for the account (account level)

Add block rules for the account

You can add block rules for all phone users in the account to block a specific number or all numbers with a prefix (country code and area code).

1. Sign in to the Zoom web portal as an admin with the privilege to edit account settings.
2. In the top-right corner, click your profile picture or initials, then click Admin Center.
3. In the side menu, click Product configuration.
4. Click Phone system, then click Company Info.
5. At the top, click Account Settings.
6. Click the Block List tab.
7. Click Add.
8. Enter the following information:
   • Match Type
     • Select Prefix Match if you want to block all numbers with a specific country code and area code.
       Note: Enter a country code as part of the prefix. For example, entering 1905 blocks numbers with country code 1 and area code 905.
     • Select Phone Number Match if you want to block a specific phone number.
       Note: Enter a country code before the prefix or phone number. For example, entering 19051231234, blocks number +1 (905) 123-1234.
   • Type
     • Select Outbound to prevent phone users from calling the blocked number or prefix.
   • Comment (Optional): Enter a comment to help you identify the blocked number or prefix.
   • Status: Enable or disable the blocked number.
9. Click Save.

Activate or deactivate blocked numbers

After adding numbers to the Block List, you can activate or deactivate them. Deactivated blocked numbers will appear but won't apply to any outbound or inbound calls until activated.

1. Sign in to the Zoom web portal as an admin with the privilege to edit account settings.
2. In the top-right corner, click your profile picture or initials, then click Admin Center.
3. In the side menu, click Product configuration.
4. Click Phone system, then click Company Info.
5. At the top, click Account Settings.
6. Click the Block List tab.
7. To the right of the rule you want to activate or deactivate, click Edit.
8. Click the Status toggle to activate the blocked number (enable) or deactivate it (disable).
9. Click Save.

Delete a blocked number

You can delete numbers from your block list if you don't want to block that number. You can only delete numbers or rules one at a time.

1. Sign in to the Zoom web portal as an admin with the privilege to edit account settings.
2. In the top-right corner, click your profile picture or initials, then click Admin Center.
3. In the side menu, click Product configuration.
4. Click Phone system, then click Company Info.
5. At the top, click Account Settings.
6. Click the Block List tab.
7. To the right of the rule you want to remove, click Delete.
   A confirmation window will appear.
8. In the window, click Delete to confirm.