How to Block a Specific Spam Number in Amazon connect Connect (No Lambda Required)

ByGanesh

Are spam calls disrupting your agents and skewing your contact center metrics? If you have a specific number you need to block immediately, you can do it directly inside the Amazon Connect Flow editor using the Check contact attributes block. In this guide, we’ll walk through how to create a simple “Deny List” using the No Match logic to filter out spammers while keeping your lines open for real customers.

Block Spam Caller in Amazon Connect

Why This Method Works

We will use a logic gate system:

  1. Check: Who is calling?
  2. Match: Is it the spammer? -> Disconnect.
  3. No Match: Is it anyone else? -> Let them through.

Step 1: Open Your Inbound Contact Flow

Navigate to your Amazon Connect dashboard. Go to Routing > Contact Flows and select the Inbound flow where you are receiving the spam calls.

Step 2: Add the “Check Contact Attributes” Block

From the list of available blocks on the left side, drag and drop the Check contact attributes block onto the canvas. This block should be placed very early in your flow (usually right after the “Start” or “Logging” block) so you don’t waste resources on the spammer.

Step 3: Configure the Attribute to Check

Click the block header to open the properties panel on the right. We need to tell Amazon Connect to look at the caller’s phone number.

  1. Under Namespace, select System.
  2. Under Attribute, select Customer number (or Customer Endpoint).

Step 4: Add the Spam Number (The Condition)

Now, we define the specific number we want to block.

  1. Scroll down to Conditions to check.
  2. Set the Operator to Equals.
  3. In the Value field, enter the spammer’s phone number.
    • Critical: You must use E.164 format. This means including the + sign and the country code (e.g., +15550109988).

Step 5: Configure the “Match” and “No Match” Logic

This is the most important step. The block will now give you two outputs (branches). You must wire them correctly.

The “Match” Branch (The Spammer)

If the caller’s number matches the number you entered in Step 4, we want to block them.

  • Connect the Match branch directly to a Disconnect / Hang up block.
  • (Optional): You can add a “Play Prompt” before the disconnect that says “This number is blocked.”

The “No Match” Branch (The Real Customers)

If the caller’s number does not match the spam number (which will be 99.9% of your callers), we want to let them in.

  • Connect the No Match branch to the rest of your flow (e.g., “Play Prompt”, “Get Customer Input”, or “Transfer to Queue”).

Step 6: Publish the Flow

Once your connections are made, click Save and then Publish. The block is now active. Any call originating from that specific number will be immediately disconnected, while all other calls will flow through the “No Match” branch seamlessly.

By using the native Check contact attributes block, you’ve created a cost-effective firewall for your contact center.

  • Match = Blocked.
  • No Match = Allowed.

This method is perfect for blocking individual numbers quickly without needing developer assistance or complex coding