# Allow calls from selected countries

**Scenario:** A company wants to accept calls only from callers whose numbers begin with the UK country code **44** or
Germany's country code **49**, while blocking all other inbound calls.

## Step 1: Create a Number List

1. Go to **Voice > Inbound Trunks** and open the **Number Lists** tab.
2. Click **Create New** and enter a **Friendly name** (e.g., *UK and DE Only*).
3. Set the **Mode** to **Prefix match**.
4. Set the **Default action** to **Reject call**.
5. Click **Create**.

[![Creating a Number List for Country-Based Filtering](../../../../_images/fig1114.png)](../../../../_images/fig1114.png)


**Fig. 1.** Creating a Number List for Country-Based Filtering

## Step 2: Add the allowed prefixes

Enter the prefixes in the format used for matching. Country-code prefixes match only calling numbers in E.164 format
without a leading `+`, such as **442071234567**. A calling number such as **+442071234567** does not start with **44**.
For a SIP trunk, this example requires **CLI Format** set to **E.164** and no **CLI Prefix**.

1. Click the **Actions** button next to the **Number List**.
2. Select **Manage numbers**.
3. Click **Add Numbers**.
4. Enter **44, 49** in the input field (this allows calls from the UK and Germany) and set the action to **Allow call**.
5. Click **Submit**.

With **Prefix match**, **44** matches every calling number that starts with **44**, such as **442071234567**, and **49**
matches every calling number that starts with **49**.

[![Adding Country Codes to Allow Calls](../../../../_images/fig1215.png)](../../../../_images/fig1215.png)


**Fig. 2.** Adding Country Codes to Allow Calls

## Step 3: Assign the Number List to a trunk

Assign the **Number List** to the inbound **SIP** or **PSTN** trunk that receives these calls so the call filtering
rules take effect. Select it in the trunk's **CLI Number List** field on the **Number Translations** tab. For the steps,
see [Assign a Number List to a Trunk](../how-to-guides/configure-number-lists.html#inbound-number-lists-assign).

Calling numbers beginning with **44** or **49** are allowed. All other calls are rejected.

## Related resources

- [Number lists](../index.html) - Understand how Number Lists match calls and
  allow or reject them.
- [Configure number lists](../how-to-guides/configure-number-lists.html) -
  Create a Number List, add numbers or prefixes, and assign it to a trunk.
- [Number List settings reference](../number-list-settings-reference.html) -
  Look up field definitions, defaults, values, and limits.

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