Prefix Block in WhatsApp

To block the prefixes to which we do not want to sent the WhatsApp messages to.

Step 1

Go to WhatsApp panel in MSG91 Dashboard, and click on the “Blocked Prefix” option.

Step 2

A window will open with option, here click on the “Add New”. on top right corner.

Step 3

Select the number from the drop down panel, or you on the toggle of “Apply to all numbers”, so that whichever prefix you block, It will be blocked for all the numbers that are integrated in your MSG91 WhatsApp.

Step 4

For Eg: You want to send to India (prefix-91) only.

For that you need to block the remaining prefixes- 0,1,2,3,4,5,6,7,8,90,92,93,94,95,96,97,98, and 99.

You can see below, and click on “Save”.

Step 5

Now on the screen you can see the whole list of the prefix you have blocked.

Step 6 (Optional)

For specific use cases like:

You want to block the marketing messages to a specific prefix like here (975), you can simply in the Category section - Block the marketing, and unblock the remaining category, like shown in the image below.

Step 7 (Optional)

You can check the with applying filters in the main page to check which are blocked and unblocked as per different numbers, as shown in the image below.

Note: While searching with unblocked filter, If you do not see any prefix listed, it means that the prefix is completely unblocked.

When you select a WhatsApp number and choose “Unblocked” under each category, no results will be shown because the prefix is not blocked in any category.

This search filter is designed only to help identify blocked numbers. It can be used to:

• Find prefix that are blocked under a specific category, or

• View prefix that are blocked across any category

If a prefix is fully unblocked, it will not appear in the search results, which is the expected behaviour.